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Finding the Fourth Proportional to 767,613.76, 1,059,320.80 and 423,488.96

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Solution

The fourth proportional to 767,613.76, 1,059,320.80 and 423,488.96 is: 584,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,613.76 : 1,059,320.80 = 423,488.96 : x
  2. Step 2: Convert to fraction form
    767,613.76/1,059,320.80 = 423,488.96/x
  3. Step 3: Cross multiply
    767,613.76x = 1,059,320.80 × 423,488.96
  4. Step 4: Simplify right side
    767,613.76x = 448,610,663,898.37
  5. Step 5: Solve for x
    x = 448,610,663,898.37/767,613.76
  6. Step 6: Final answer
    x = 584,422.38

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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.