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Finding the Fourth Proportional to 709,276.80, 1,064,692.80 and 443,337.60

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Solution

The fourth proportional to 709,276.80, 1,064,692.80 and 443,337.60 is: 665,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,276.80 : 1,064,692.80 = 443,337.60 : x
  2. Step 2: Convert to fraction form
    709,276.80/1,064,692.80 = 443,337.60/x
  3. Step 3: Cross multiply
    709,276.80x = 1,064,692.80 × 443,337.60
  4. Step 4: Simplify right side
    709,276.80x = 472,018,350,689.28
  5. Step 5: Solve for x
    x = 472,018,350,689.28/709,276.80
  6. Step 6: Final answer
    x = 665,492.44

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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.