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Finding the Fourth Proportional to 584,139.60, 876,209.40 and 318,419.10

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Solution

The fourth proportional to 584,139.60, 876,209.40 and 318,419.10 is: 477,628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,139.60 : 876,209.40 = 318,419.10 : x
  2. Step 2: Convert to fraction form
    584,139.60/876,209.40 = 318,419.10/x
  3. Step 3: Cross multiply
    584,139.60x = 876,209.40 × 318,419.10
  4. Step 4: Simplify right side
    584,139.60x = 279,001,808,559.54
  5. Step 5: Solve for x
    x = 279,001,808,559.54/584,139.60
  6. Step 6: Final answer
    x = 477,628.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.