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Finding the Fourth Proportional to 718,459.89, 991,103.58 and 446,424.43

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Solution

The fourth proportional to 718,459.89, 991,103.58 and 446,424.43 is: 615,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,459.89 : 991,103.58 = 446,424.43 : x
  2. Step 2: Convert to fraction form
    718,459.89/991,103.58 = 446,424.43/x
  3. Step 3: Cross multiply
    718,459.89x = 991,103.58 × 446,424.43
  4. Step 4: Simplify right side
    718,459.89x = 442,452,848,294.70
  5. Step 5: Solve for x
    x = 442,452,848,294.70/718,459.89
  6. Step 6: Final answer
    x = 615,835.14

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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.