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Finding the Fourth Proportional to 487,622.34, 672,948.54 and 272,776.86

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Solution

The fourth proportional to 487,622.34, 672,948.54 and 272,776.86 is: 376,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,622.34 : 672,948.54 = 272,776.86 : x
  2. Step 2: Convert to fraction form
    487,622.34/672,948.54 = 272,776.86/x
  3. Step 3: Cross multiply
    487,622.34x = 672,948.54 × 272,776.86
  4. Step 4: Simplify right side
    487,622.34x = 183,564,789,682.78
  5. Step 5: Solve for x
    x = 183,564,789,682.78/487,622.34
  6. Step 6: Final answer
    x = 376,448.69

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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.