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Finding the Fourth Proportional to 663,343.20, 914,690.88 and 448,109.76

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Solution

The fourth proportional to 663,343.20, 914,690.88 and 448,109.76 is: 617,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,343.20 : 914,690.88 = 448,109.76 : x
  2. Step 2: Convert to fraction form
    663,343.20/914,690.88 = 448,109.76/x
  3. Step 3: Cross multiply
    663,343.20x = 914,690.88 × 448,109.76
  4. Step 4: Simplify right side
    663,343.20x = 409,881,910,710.99
  5. Step 5: Solve for x
    x = 409,881,910,710.99/663,343.20
  6. Step 6: Final answer
    x = 617,903.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.