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Finding the Fourth Proportional to 788,697.80, 1,183,046.70 and 781,699.40

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Solution

The fourth proportional to 788,697.80, 1,183,046.70 and 781,699.40 is: 1,172,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,697.80 : 1,183,046.70 = 781,699.40 : x
  2. Step 2: Convert to fraction form
    788,697.80/1,183,046.70 = 781,699.40/x
  3. Step 3: Cross multiply
    788,697.80x = 1,183,046.70 × 781,699.40
  4. Step 4: Simplify right side
    788,697.80x = 924,786,895,561.98
  5. Step 5: Solve for x
    x = 924,786,895,561.98/788,697.80
  6. Step 6: Final answer
    x = 1,172,549.10

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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.