Home / 1,142,470,965.12-1,576,643,188.32-647,417,212.80

Finding the Fourth Proportional to 1,142,470,965.12, 1,576,643,188.32 and 647,417,212.80

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Solution

The fourth proportional to 1,142,470,965.12, 1,576,643,188.32 and 647,417,212.80 is: 893,454,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,470,965.12 : 1,576,643,188.32 = 647,417,212.80 : x
  2. Step 2: Convert to fraction form
    1,142,470,965.12/1,576,643,188.32 = 647,417,212.80/x
  3. Step 3: Cross multiply
    1,142,470,965.12x = 1,576,643,188.32 × 647,417,212.80
  4. Step 4: Simplify right side
    1,142,470,965.12x = 1,020,745,938,562,239,744
  5. Step 5: Solve for x
    x = 1,020,745,938,562,239,744/1,142,470,965.12
  6. Step 6: Final answer
    x = 893,454,599.48

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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.