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Finding the Fourth Proportional to 788,670.80, 1,183,006.20 and 781,672.40

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Solution

The fourth proportional to 788,670.80, 1,183,006.20 and 781,672.40 is: 1,172,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,670.80 : 1,183,006.20 = 781,672.40 : x
  2. Step 2: Convert to fraction form
    788,670.80/1,183,006.20 = 781,672.40/x
  3. Step 3: Cross multiply
    788,670.80x = 1,183,006.20 × 781,672.40
  4. Step 4: Simplify right side
    788,670.80x = 924,723,295,568.88
  5. Step 5: Solve for x
    x = 924,723,295,568.88/788,670.80
  6. Step 6: Final answer
    x = 1,172,508.60

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1.5x scale

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.