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Finding the Fourth Proportional to 521,366.13, 719,425.74 and 291,891.51

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Solution

The fourth proportional to 521,366.13, 719,425.74 and 291,891.51 is: 402,776.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,366.13 : 719,425.74 = 291,891.51 : x
  2. Step 2: Convert to fraction form
    521,366.13/719,425.74 = 291,891.51/x
  3. Step 3: Cross multiply
    521,366.13x = 719,425.74 × 291,891.51
  4. Step 4: Simplify right side
    521,366.13x = 209,994,265,581.47
  5. Step 5: Solve for x
    x = 209,994,265,581.47/521,366.13
  6. Step 6: Final answer
    x = 402,776.96

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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.