Home / 687,236.05-948,417.69-429,265.73

Finding the Fourth Proportional to 687,236.05, 948,417.69 and 429,265.73

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Solution

The fourth proportional to 687,236.05, 948,417.69 and 429,265.73 is: 592,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,236.05 : 948,417.69 = 429,265.73 : x
  2. Step 2: Convert to fraction form
    687,236.05/948,417.69 = 429,265.73/x
  3. Step 3: Cross multiply
    687,236.05x = 948,417.69 × 429,265.73
  4. Step 4: Simplify right side
    687,236.05x = 407,123,208,274.09
  5. Step 5: Solve for x
    x = 407,123,208,274.09/687,236.05
  6. Step 6: Final answer
    x = 592,406.66

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Double scale
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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.