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Finding the Fourth Proportional to 521,089.56, 719,116.38 and 291,645.06

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Solution

The fourth proportional to 521,089.56, 719,116.38 and 291,645.06 is: 402,477.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,089.56 : 719,116.38 = 291,645.06 : x
  2. Step 2: Convert to fraction form
    521,089.56/719,116.38 = 291,645.06/x
  3. Step 3: Cross multiply
    521,089.56x = 719,116.38 × 291,645.06
  4. Step 4: Simplify right side
    521,089.56x = 209,726,739,792.08
  5. Step 5: Solve for x
    x = 209,726,739,792.08/521,089.56
  6. Step 6: Final answer
    x = 402,477.34

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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.