Home / 858,854.40-1,285,657.20-669,897.60

Finding the Fourth Proportional to 858,854.40, 1,285,657.20 and 669,897.60

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Solution

The fourth proportional to 858,854.40, 1,285,657.20 and 669,897.60 is: 1,002,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,854.40 : 1,285,657.20 = 669,897.60 : x
  2. Step 2: Convert to fraction form
    858,854.40/1,285,657.20 = 669,897.60/x
  3. Step 3: Cross multiply
    858,854.40x = 1,285,657.20 × 669,897.60
  4. Step 4: Simplify right side
    858,854.40x = 861,258,672,702.72
  5. Step 5: Solve for x
    x = 861,258,672,702.72/858,854.40
  6. Step 6: Final answer
    x = 1,002,799.39

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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.