Home / 1,298,865,188.48-1,792,567,555.96-790,264,008.76

Finding the Fourth Proportional to 1,298,865,188.48, 1,792,567,555.96 and 790,264,008.76

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Solution

The fourth proportional to 1,298,865,188.48, 1,792,567,555.96 and 790,264,008.76 is: 1,090,645,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,865,188.48 : 1,792,567,555.96 = 790,264,008.76 : x
  2. Step 2: Convert to fraction form
    1,298,865,188.48/1,792,567,555.96 = 790,264,008.76/x
  3. Step 3: Cross multiply
    1,298,865,188.48x = 1,792,567,555.96 × 790,264,008.76
  4. Step 4: Simplify right side
    1,298,865,188.48x = 1,416,601,622,746,065,152
  5. Step 5: Solve for x
    x = 1,416,601,622,746,065,152/1,298,865,188.48
  6. Step 6: Final answer
    x = 1,090,645,615.35

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Double scale
Find fourth proportional to 1,298,865,189.48, 1,792,567,557.34 and 790,264,009.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.