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Finding the Fourth Proportional to 521,062.84, 719,079.48 and 291,618.32

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Solution

The fourth proportional to 521,062.84, 719,079.48 and 291,618.32 is: 402,440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,062.84 : 719,079.48 = 291,618.32 : x
  2. Step 2: Convert to fraction form
    521,062.84/719,079.48 = 291,618.32/x
  3. Step 3: Cross multiply
    521,062.84x = 719,079.48 × 291,618.32
  4. Step 4: Simplify right side
    521,062.84x = 209,696,749,904.07
  5. Step 5: Solve for x
    x = 209,696,749,904.07/521,062.84
  6. Step 6: Final answer
    x = 402,440.43

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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.