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Finding the Fourth Proportional to 680,612.88, 1,018,354.14 and 406,043.67

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Solution

The fourth proportional to 680,612.88, 1,018,354.14 and 406,043.67 is: 607,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,612.88 : 1,018,354.14 = 406,043.67 : x
  2. Step 2: Convert to fraction form
    680,612.88/1,018,354.14 = 406,043.67/x
  3. Step 3: Cross multiply
    680,612.88x = 1,018,354.14 × 406,043.67
  4. Step 4: Simplify right side
    680,612.88x = 413,496,252,365.29
  5. Step 5: Solve for x
    x = 413,496,252,365.29/680,612.88
  6. Step 6: Final answer
    x = 607,535.16

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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.