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Finding the Fourth Proportional to 545,141.80, 817,712.70 and 541,642.60

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Solution

The fourth proportional to 545,141.80, 817,712.70 and 541,642.60 is: 812,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,141.80 : 817,712.70 = 541,642.60 : x
  2. Step 2: Convert to fraction form
    545,141.80/817,712.70 = 541,642.60/x
  3. Step 3: Cross multiply
    545,141.80x = 817,712.70 × 541,642.60
  4. Step 4: Simplify right side
    545,141.80x = 442,908,032,881.02
  5. Step 5: Solve for x
    x = 442,908,032,881.02/545,141.80
  6. Step 6: Final answer
    x = 812,463.90

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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.