Home / 831,002.30-1,246,503.45-515,815.10

Finding the Fourth Proportional to 831,002.30, 1,246,503.45 and 515,815.10

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Solution

The fourth proportional to 831,002.30, 1,246,503.45 and 515,815.10 is: 773,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,002.30 : 1,246,503.45 = 515,815.10 : x
  2. Step 2: Convert to fraction form
    831,002.30/1,246,503.45 = 515,815.10/x
  3. Step 3: Cross multiply
    831,002.30x = 1,246,503.45 × 515,815.10
  4. Step 4: Simplify right side
    831,002.30x = 642,965,301,712.10
  5. Step 5: Solve for x
    x = 642,965,301,712.10/831,002.30
  6. Step 6: Final answer
    x = 773,722.65

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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.