Home / 611,719.13-917,587.92-212,372.60

Finding the Fourth Proportional to 611,719.13, 917,587.92 and 212,372.60

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Solution

The fourth proportional to 611,719.13, 917,587.92 and 212,372.60 is: 318,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,719.13 : 917,587.92 = 212,372.60 : x
  2. Step 2: Convert to fraction form
    611,719.13/917,587.92 = 212,372.60/x
  3. Step 3: Cross multiply
    611,719.13x = 917,587.92 × 212,372.60
  4. Step 4: Simplify right side
    611,719.13x = 194,870,532,298.99
  5. Step 5: Solve for x
    x = 194,870,532,298.99/611,719.13
  6. Step 6: Final answer
    x = 318,562.10

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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.