Home / 858,862.40-1,285,669.20-669,905.60

Finding the Fourth Proportional to 858,862.40, 1,285,669.20 and 669,905.60

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Solution

The fourth proportional to 858,862.40, 1,285,669.20 and 669,905.60 is: 1,002,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,862.40 : 1,285,669.20 = 669,905.60 : x
  2. Step 2: Convert to fraction form
    858,862.40/1,285,669.20 = 669,905.60/x
  3. Step 3: Cross multiply
    858,862.40x = 1,285,669.20 × 669,905.60
  4. Step 4: Simplify right side
    858,862.40x = 861,276,996,827.52
  5. Step 5: Solve for x
    x = 861,276,996,827.52/858,862.40
  6. Step 6: Final answer
    x = 1,002,811.39

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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.