Home / 485,307.40-727,961.10-298,424.20

Finding the Fourth Proportional to 485,307.40, 727,961.10 and 298,424.20

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Solution

The fourth proportional to 485,307.40, 727,961.10 and 298,424.20 is: 447,636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,307.40 : 727,961.10 = 298,424.20 : x
  2. Step 2: Convert to fraction form
    485,307.40/727,961.10 = 298,424.20/x
  3. Step 3: Cross multiply
    485,307.40x = 727,961.10 × 298,424.20
  4. Step 4: Simplify right side
    485,307.40x = 217,241,208,898.62
  5. Step 5: Solve for x
    x = 217,241,208,898.62/485,307.40
  6. Step 6: Final answer
    x = 447,636.30

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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.