Home / 645,002.96-890,081.66-415,569.91

Finding the Fourth Proportional to 645,002.96, 890,081.66 and 415,569.91

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Solution

The fourth proportional to 645,002.96, 890,081.66 and 415,569.91 is: 573,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,002.96 : 890,081.66 = 415,569.91 : x
  2. Step 2: Convert to fraction form
    645,002.96/890,081.66 = 415,569.91/x
  3. Step 3: Cross multiply
    645,002.96x = 890,081.66 × 415,569.91
  4. Step 4: Simplify right side
    645,002.96x = 369,891,156,525.13
  5. Step 5: Solve for x
    x = 369,891,156,525.13/645,002.96
  6. Step 6: Final answer
    x = 573,472.03

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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.