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Finding the Fourth Proportional to 708,398.94, 977,591.26 and 386,109.30

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Solution

The fourth proportional to 708,398.94, 977,591.26 and 386,109.30 is: 532,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,398.94 : 977,591.26 = 386,109.30 : x
  2. Step 2: Convert to fraction form
    708,398.94/977,591.26 = 386,109.30/x
  3. Step 3: Cross multiply
    708,398.94x = 977,591.26 × 386,109.30
  4. Step 4: Simplify right side
    708,398.94x = 377,457,077,084.72
  5. Step 5: Solve for x
    x = 377,457,077,084.72/708,398.94
  6. Step 6: Final answer
    x = 532,831.23

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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.