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Finding the Fourth Proportional to 978,792,613.60, 1,468,188,920.40 and 564,977,221.60

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Solution

The fourth proportional to 978,792,613.60, 1,468,188,920.40 and 564,977,221.60 is: 847,465,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,792,613.60 : 1,468,188,920.40 = 564,977,221.60 : x
  2. Step 2: Convert to fraction form
    978,792,613.60/1,468,188,920.40 = 564,977,221.60/x
  3. Step 3: Cross multiply
    978,792,613.60x = 1,468,188,920.40 × 564,977,221.60
  4. Step 4: Simplify right side
    978,792,613.60x = 829,493,297,031,495,680
  5. Step 5: Solve for x
    x = 829,493,297,031,495,680/978,792,613.60
  6. Step 6: Final answer
    x = 847,465,832.40

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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.