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Finding the Fourth Proportional to 604,189.30, 906,284.02 and 287,686.66

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Solution

The fourth proportional to 604,189.30, 906,284.02 and 287,686.66 is: 431,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,189.30 : 906,284.02 = 287,686.66 : x
  2. Step 2: Convert to fraction form
    604,189.30/906,284.02 = 287,686.66/x
  3. Step 3: Cross multiply
    604,189.30x = 906,284.02 × 287,686.66
  4. Step 4: Simplify right side
    604,189.30x = 260,725,822,725.17
  5. Step 5: Solve for x
    x = 260,725,822,725.17/604,189.30
  6. Step 6: Final answer
    x = 431,530.02

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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.