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Finding the Fourth Proportional to 618,489.61, 852,637.50 and 454,856.91

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Solution

The fourth proportional to 618,489.61, 852,637.50 and 454,856.91 is: 627,056.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,489.61 : 852,637.50 = 454,856.91 : x
  2. Step 2: Convert to fraction form
    618,489.61/852,637.50 = 454,856.91/x
  3. Step 3: Cross multiply
    618,489.61x = 852,637.50 × 454,856.91
  4. Step 4: Simplify right side
    618,489.61x = 387,828,058,600.13
  5. Step 5: Solve for x
    x = 387,828,058,600.13/618,489.61
  6. Step 6: Final answer
    x = 627,056.71

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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.