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Finding the Fourth Proportional to 545,901.26, 817,633.17 and 418,603.95

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Solution

The fourth proportional to 545,901.26, 817,633.17 and 418,603.95 is: 626,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,901.26 : 817,633.17 = 418,603.95 : x
  2. Step 2: Convert to fraction form
    545,901.26/817,633.17 = 418,603.95/x
  3. Step 3: Cross multiply
    545,901.26x = 817,633.17 × 418,603.95
  4. Step 4: Simplify right side
    545,901.26x = 342,264,474,613.02
  5. Step 5: Solve for x
    x = 342,264,474,613.02/545,901.26
  6. Step 6: Final answer
    x = 626,971.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.