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Finding the Fourth Proportional to 545,876.20, 818,036.70 and 402,603.40

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Solution

The fourth proportional to 545,876.20, 818,036.70 and 402,603.40 is: 603,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,876.20 : 818,036.70 = 402,603.40 : x
  2. Step 2: Convert to fraction form
    545,876.20/818,036.70 = 402,603.40/x
  3. Step 3: Cross multiply
    545,876.20x = 818,036.70 × 402,603.40
  4. Step 4: Simplify right side
    545,876.20x = 329,344,356,744.78
  5. Step 5: Solve for x
    x = 329,344,356,744.78/545,876.20
  6. Step 6: Final answer
    x = 603,331.59

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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.