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Finding the Fourth Proportional to 661,331.04, 912,643.28 and 359,531.52

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Solution

The fourth proportional to 661,331.04, 912,643.28 and 359,531.52 is: 496,157.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,331.04 : 912,643.28 = 359,531.52 : x
  2. Step 2: Convert to fraction form
    661,331.04/912,643.28 = 359,531.52/x
  3. Step 3: Cross multiply
    661,331.04x = 912,643.28 × 359,531.52
  4. Step 4: Simplify right side
    661,331.04x = 328,124,025,676.19
  5. Step 5: Solve for x
    x = 328,124,025,676.19/661,331.04
  6. Step 6: Final answer
    x = 496,157.00

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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.