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Finding the Fourth Proportional to 869,363.20, 1,304,692.80 and 448,422.40

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Solution

The fourth proportional to 869,363.20, 1,304,692.80 and 448,422.40 is: 672,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,363.20 : 1,304,692.80 = 448,422.40 : x
  2. Step 2: Convert to fraction form
    869,363.20/1,304,692.80 = 448,422.40/x
  3. Step 3: Cross multiply
    869,363.20x = 1,304,692.80 × 448,422.40
  4. Step 4: Simplify right side
    869,363.20x = 585,053,476,638.72
  5. Step 5: Solve for x
    x = 585,053,476,638.72/869,363.20
  6. Step 6: Final answer
    x = 672,967.84

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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.