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Finding the Fourth Proportional to 486,745,275.48, 671,741,436.15 and 274,978,658.71

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Solution

The fourth proportional to 486,745,275.48, 671,741,436.15 and 274,978,658.71 is: 379,489,166.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,745,275.48 : 671,741,436.15 = 274,978,658.71 : x
  2. Step 2: Convert to fraction form
    486,745,275.48/671,741,436.15 = 274,978,658.71/x
  3. Step 3: Cross multiply
    486,745,275.48x = 671,741,436.15 × 274,978,658.71
  4. Step 4: Simplify right side
    486,745,275.48x = 184,714,559,109,513,856
  5. Step 5: Solve for x
    x = 184,714,559,109,513,856/486,745,275.48
  6. Step 6: Final answer
    x = 379,489,166.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.