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Finding the Fourth Proportional to 708,137.71, 977,230.17 and 385,847.89

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Solution

The fourth proportional to 708,137.71, 977,230.17 and 385,847.89 is: 532,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,137.71 : 977,230.17 = 385,847.89 : x
  2. Step 2: Convert to fraction form
    708,137.71/977,230.17 = 385,847.89/x
  3. Step 3: Cross multiply
    708,137.71x = 977,230.17 × 385,847.89
  4. Step 4: Simplify right side
    708,137.71x = 377,062,196,695.77
  5. Step 5: Solve for x
    x = 377,062,196,695.77/708,137.71
  6. Step 6: Final answer
    x = 532,470.16

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1.5x scale

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.