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Finding the Fourth Proportional to 545,616.72, 752,690.30 and 423,925.20

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Solution

The fourth proportional to 545,616.72, 752,690.30 and 423,925.20 is: 584,814.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,616.72 : 752,690.30 = 423,925.20 : x
  2. Step 2: Convert to fraction form
    545,616.72/752,690.30 = 423,925.20/x
  3. Step 3: Cross multiply
    545,616.72x = 752,690.30 × 423,925.20
  4. Step 4: Simplify right side
    545,616.72x = 319,084,383,845.93
  5. Step 5: Solve for x
    x = 319,084,383,845.93/545,616.72
  6. Step 6: Final answer
    x = 584,814.16

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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.