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Finding the Fourth Proportional to 661,237.71, 912,607.75 and 403,264.35

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Solution

The fourth proportional to 661,237.71, 912,607.75 and 403,264.35 is: 556,565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,237.71 : 912,607.75 = 403,264.35 : x
  2. Step 2: Convert to fraction form
    661,237.71/912,607.75 = 403,264.35/x
  3. Step 3: Cross multiply
    661,237.71x = 912,607.75 × 403,264.35
  4. Step 4: Simplify right side
    661,237.71x = 368,022,171,108.71
  5. Step 5: Solve for x
    x = 368,022,171,108.71/661,237.71
  6. Step 6: Final answer
    x = 556,565.61

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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.