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Finding the Fourth Proportional to 708,340.74, 977,481.76 and 386,043.93

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Solution

The fourth proportional to 708,340.74, 977,481.76 and 386,043.93 is: 532,725.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,340.74 : 977,481.76 = 386,043.93 : x
  2. Step 2: Convert to fraction form
    708,340.74/977,481.76 = 386,043.93/x
  3. Step 3: Cross multiply
    708,340.74x = 977,481.76 × 386,043.93
  4. Step 4: Simplify right side
    708,340.74x = 377,350,900,133.72
  5. Step 5: Solve for x
    x = 377,350,900,133.72/708,340.74
  6. Step 6: Final answer
    x = 532,725.11

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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.