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Finding the Fourth Proportional to 851,987.60, 1,280,605.80 and 804,748.40

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Solution

The fourth proportional to 851,987.60, 1,280,605.80 and 804,748.40 is: 1,209,601.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,987.60 : 1,280,605.80 = 804,748.40 : x
  2. Step 2: Convert to fraction form
    851,987.60/1,280,605.80 = 804,748.40/x
  3. Step 3: Cross multiply
    851,987.60x = 1,280,605.80 × 804,748.40
  4. Step 4: Simplify right side
    851,987.60x = 1,030,565,468,580.72
  5. Step 5: Solve for x
    x = 1,030,565,468,580.72/851,987.60
  6. Step 6: Final answer
    x = 1,209,601.49

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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.