Home / 831,460.32-1,246,802.76-431,993.70

Finding the Fourth Proportional to 831,460.32, 1,246,802.76 and 431,993.70

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Solution

The fourth proportional to 831,460.32, 1,246,802.76 and 431,993.70 is: 647,789.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,460.32 : 1,246,802.76 = 431,993.70 : x
  2. Step 2: Convert to fraction form
    831,460.32/1,246,802.76 = 431,993.70/x
  3. Step 3: Cross multiply
    831,460.32x = 1,246,802.76 × 431,993.70
  4. Step 4: Simplify right side
    831,460.32x = 538,610,937,462.61
  5. Step 5: Solve for x
    x = 538,610,937,462.61/831,460.32
  6. Step 6: Final answer
    x = 647,789.11

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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.