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Finding the Fourth Proportional to 545,291.52, 752,423.04 and 318,893.28

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Solution

The fourth proportional to 545,291.52, 752,423.04 and 318,893.28 is: 440,026.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,291.52 : 752,423.04 = 318,893.28 : x
  2. Step 2: Convert to fraction form
    545,291.52/752,423.04 = 318,893.28/x
  3. Step 3: Cross multiply
    545,291.52x = 752,423.04 × 318,893.28
  4. Step 4: Simplify right side
    545,291.52x = 239,942,651,173.17
  5. Step 5: Solve for x
    x = 239,942,651,173.17/545,291.52
  6. Step 6: Final answer
    x = 440,026.38

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1.5x scale

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.