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Finding the Fourth Proportional to 659,843,140.80, 990,402,440.40 and 332,688,061.20

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Solution

The fourth proportional to 659,843,140.80, 990,402,440.40 and 332,688,061.20 is: 499,353,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,843,140.80 : 990,402,440.40 = 332,688,061.20 : x
  2. Step 2: Convert to fraction form
    659,843,140.80/990,402,440.40 = 332,688,061.20/x
  3. Step 3: Cross multiply
    659,843,140.80x = 990,402,440.40 × 332,688,061.20
  4. Step 4: Simplify right side
    659,843,140.80x = 329,495,067,704,424,512
  5. Step 5: Solve for x
    x = 329,495,067,704,424,512/659,843,140.80
  6. Step 6: Final answer
    x = 499,353,630.17

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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.