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Finding the Fourth Proportional to 708,501.36, 977,703 and 386,204.40

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Solution

The fourth proportional to 708,501.36, 977,703 and 386,204.40 is: 532,946.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,501.36 : 977,703 = 386,204.40 : x
  2. Step 2: Convert to fraction form
    708,501.36/977,703 = 386,204.40/x
  3. Step 3: Cross multiply
    708,501.36x = 977,703 × 386,204.40
  4. Step 4: Simplify right side
    708,501.36x = 377,593,200,493.20
  5. Step 5: Solve for x
    x = 377,593,200,493.20/708,501.36
  6. Step 6: Final answer
    x = 532,946.33

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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.