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Finding the Fourth Proportional to 545,862.30, 818,793.45 and 346,407.90

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Solution

The fourth proportional to 545,862.30, 818,793.45 and 346,407.90 is: 519,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,862.30 : 818,793.45 = 346,407.90 : x
  2. Step 2: Convert to fraction form
    545,862.30/818,793.45 = 346,407.90/x
  3. Step 3: Cross multiply
    545,862.30x = 818,793.45 × 346,407.90
  4. Step 4: Simplify right side
    545,862.30x = 283,636,519,548.26
  5. Step 5: Solve for x
    x = 283,636,519,548.26/545,862.30
  6. Step 6: Final answer
    x = 519,611.85

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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.