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Finding the Fourth Proportional to 472,409,200.80, 708,613,801.20 and 424,792,087.20

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Solution

The fourth proportional to 472,409,200.80, 708,613,801.20 and 424,792,087.20 is: 637,188,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,409,200.80 : 708,613,801.20 = 424,792,087.20 : x
  2. Step 2: Convert to fraction form
    472,409,200.80/708,613,801.20 = 424,792,087.20/x
  3. Step 3: Cross multiply
    472,409,200.80x = 708,613,801.20 × 424,792,087.20
  4. Step 4: Simplify right side
    472,409,200.80x = 301,013,535,630,473,856
  5. Step 5: Solve for x
    x = 301,013,535,630,473,856/472,409,200.80
  6. Step 6: Final answer
    x = 637,188,130.80

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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.