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Finding the Fourth Proportional to 708,279.04, 977,412.18 and 385,991.92

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Solution

The fourth proportional to 708,279.04, 977,412.18 and 385,991.92 is: 532,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,279.04 : 977,412.18 = 385,991.92 : x
  2. Step 2: Convert to fraction form
    708,279.04/977,412.18 = 385,991.92/x
  3. Step 3: Cross multiply
    708,279.04x = 977,412.18 × 385,991.92
  4. Step 4: Simplify right side
    708,279.04x = 377,273,203,989.59
  5. Step 5: Solve for x
    x = 377,273,203,989.59/708,279.04
  6. Step 6: Final answer
    x = 532,661.82

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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.