Home / 1,147,142,639.76-1,582,966,291.96-645,251,503.28

Finding the Fourth Proportional to 1,147,142,639.76, 1,582,966,291.96 and 645,251,503.28

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Solution

The fourth proportional to 1,147,142,639.76, 1,582,966,291.96 and 645,251,503.28 is: 890,396,140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,142,639.76 : 1,582,966,291.96 = 645,251,503.28 : x
  2. Step 2: Convert to fraction form
    1,147,142,639.76/1,582,966,291.96 = 645,251,503.28/x
  3. Step 3: Cross multiply
    1,147,142,639.76x = 1,582,966,291.96 × 645,251,503.28
  4. Step 4: Simplify right side
    1,147,142,639.76x = 1,021,411,379,528,757,376
  5. Step 5: Solve for x
    x = 1,021,411,379,528,757,376/1,147,142,639.76
  6. Step 6: Final answer
    x = 890,396,140.92

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Double scale
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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.