Home / 508,356,040.80-762,534,061.20-139,890,280.80

Finding the Fourth Proportional to 508,356,040.80, 762,534,061.20 and 139,890,280.80

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Solution

The fourth proportional to 508,356,040.80, 762,534,061.20 and 139,890,280.80 is: 209,835,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,356,040.80 : 762,534,061.20 = 139,890,280.80 : x
  2. Step 2: Convert to fraction form
    508,356,040.80/762,534,061.20 = 139,890,280.80/x
  3. Step 3: Cross multiply
    508,356,040.80x = 762,534,061.20 × 139,890,280.80
  4. Step 4: Simplify right side
    508,356,040.80x = 106,671,103,940,832,400
  5. Step 5: Solve for x
    x = 106,671,103,940,832,400/508,356,040.80
  6. Step 6: Final answer
    x = 209,835,421.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.