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Finding the Fourth Proportional to 708,284.04, 977,419.08 and 385,996.92

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Solution

The fourth proportional to 708,284.04, 977,419.08 and 385,996.92 is: 532,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,284.04 : 977,419.08 = 385,996.92 : x
  2. Step 2: Convert to fraction form
    708,284.04/977,419.08 = 385,996.92/x
  3. Step 3: Cross multiply
    708,284.04x = 977,419.08 × 385,996.92
  4. Step 4: Simplify right side
    708,284.04x = 377,280,754,429.23
  5. Step 5: Solve for x
    x = 377,280,754,429.23/708,284.04
  6. Step 6: Final answer
    x = 532,668.72

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Double scale
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Similar ratio
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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.