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Finding the Fourth Proportional to 423,622.68, 635,579.80 and 265,666.20

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Solution

The fourth proportional to 423,622.68, 635,579.80 and 265,666.20 is: 398,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,622.68 : 635,579.80 = 265,666.20 : x
  2. Step 2: Convert to fraction form
    423,622.68/635,579.80 = 265,666.20/x
  3. Step 3: Cross multiply
    423,622.68x = 635,579.80 × 265,666.20
  4. Step 4: Simplify right side
    423,622.68x = 168,852,070,262.76
  5. Step 5: Solve for x
    x = 168,852,070,262.76/423,622.68
  6. Step 6: Final answer
    x = 398,590.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.