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Finding the Fourth Proportional to 768,897.20, 1,153,000.20 and 295,425.20

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Solution

The fourth proportional to 768,897.20, 1,153,000.20 and 295,425.20 is: 443,005.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,897.20 : 1,153,000.20 = 295,425.20 : x
  2. Step 2: Convert to fraction form
    768,897.20/1,153,000.20 = 295,425.20/x
  3. Step 3: Cross multiply
    768,897.20x = 1,153,000.20 × 295,425.20
  4. Step 4: Simplify right side
    768,897.20x = 340,625,314,685.04
  5. Step 5: Solve for x
    x = 340,625,314,685.04/768,897.20
  6. Step 6: Final answer
    x = 443,005.01

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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.