Home / 1,391,386,420.71-1,920,323,148.63-848,542,296.93

Finding the Fourth Proportional to 1,391,386,420.71, 1,920,323,148.63 and 848,542,296.93

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Solution

The fourth proportional to 1,391,386,420.71, 1,920,323,148.63 and 848,542,296.93 is: 1,171,116,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,386,420.71 : 1,920,323,148.63 = 848,542,296.93 : x
  2. Step 2: Convert to fraction form
    1,391,386,420.71/1,920,323,148.63 = 848,542,296.93/x
  3. Step 3: Cross multiply
    1,391,386,420.71x = 1,920,323,148.63 × 848,542,296.93
  4. Step 4: Simplify right side
    1,391,386,420.71x = 1,629,475,415,386,350,080
  5. Step 5: Solve for x
    x = 1,629,475,415,386,350,080/1,391,386,420.71
  6. Step 6: Final answer
    x = 1,171,116,370.79

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Double scale
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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.