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Finding the Fourth Proportional to 661,912,737.60, 992,866,440.96 and 201,849,585.60

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Solution

The fourth proportional to 661,912,737.60, 992,866,440.96 and 201,849,585.60 is: 302,773,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,912,737.60 : 992,866,440.96 = 201,849,585.60 : x
  2. Step 2: Convert to fraction form
    661,912,737.60/992,866,440.96 = 201,849,585.60/x
  3. Step 3: Cross multiply
    661,912,737.60x = 992,866,440.96 × 201,849,585.60
  4. Step 4: Simplify right side
    661,912,737.60x = 200,409,679,663,922,880
  5. Step 5: Solve for x
    x = 200,409,679,663,922,880/661,912,737.60
  6. Step 6: Final answer
    x = 302,773,565.58

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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.