Home / 438,620,612.80-657,930,919.20-369,745,859.20

Finding the Fourth Proportional to 438,620,612.80, 657,930,919.20 and 369,745,859.20

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Solution

The fourth proportional to 438,620,612.80, 657,930,919.20 and 369,745,859.20 is: 554,618,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,620,612.80 : 657,930,919.20 = 369,745,859.20 : x
  2. Step 2: Convert to fraction form
    438,620,612.80/657,930,919.20 = 369,745,859.20/x
  3. Step 3: Cross multiply
    438,620,612.80x = 657,930,919.20 × 369,745,859.20
  4. Step 4: Simplify right side
    438,620,612.80x = 243,267,233,013,849,792
  5. Step 5: Solve for x
    x = 243,267,233,013,849,792/438,620,612.80
  6. Step 6: Final answer
    x = 554,618,788.80

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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.