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Finding the Fourth Proportional to 781,661.80, 1,172,492.70 and 604,514.80

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Solution

The fourth proportional to 781,661.80, 1,172,492.70 and 604,514.80 is: 906,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,661.80 : 1,172,492.70 = 604,514.80 : x
  2. Step 2: Convert to fraction form
    781,661.80/1,172,492.70 = 604,514.80/x
  3. Step 3: Cross multiply
    781,661.80x = 1,172,492.70 × 604,514.80
  4. Step 4: Simplify right side
    781,661.80x = 708,789,190,041.96
  5. Step 5: Solve for x
    x = 708,789,190,041.96/781,661.80
  6. Step 6: Final answer
    x = 906,772.20

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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.