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Finding the Fourth Proportional to 718,526.08, 991,566 and 412,622.56

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Solution

The fourth proportional to 718,526.08, 991,566 and 412,622.56 is: 569,419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,526.08 : 991,566 = 412,622.56 : x
  2. Step 2: Convert to fraction form
    718,526.08/991,566 = 412,622.56/x
  3. Step 3: Cross multiply
    718,526.08x = 991,566 × 412,622.56
  4. Step 4: Simplify right side
    718,526.08x = 409,142,501,328.96
  5. Step 5: Solve for x
    x = 409,142,501,328.96/718,526.08
  6. Step 6: Final answer
    x = 569,419.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.