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Finding the Fourth Proportional to 708,339.74, 977,480.39 and 386,042.93

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Solution

The fourth proportional to 708,339.74, 977,480.39 and 386,042.93 is: 532,723.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,339.74 : 977,480.39 = 386,042.93 : x
  2. Step 2: Convert to fraction form
    708,339.74/977,480.39 = 386,042.93/x
  3. Step 3: Cross multiply
    708,339.74x = 977,480.39 × 386,042.93
  4. Step 4: Simplify right side
    708,339.74x = 377,349,391,842.93
  5. Step 5: Solve for x
    x = 377,349,391,842.93/708,339.74
  6. Step 6: Final answer
    x = 532,723.73

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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.