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Finding the Fourth Proportional to 480,655.20, 719,427.60 and 443,330.40

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Solution

The fourth proportional to 480,655.20, 719,427.60 and 443,330.40 is: 663,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,655.20 : 719,427.60 = 443,330.40 : x
  2. Step 2: Convert to fraction form
    480,655.20/719,427.60 = 443,330.40/x
  3. Step 3: Cross multiply
    480,655.20x = 719,427.60 × 443,330.40
  4. Step 4: Simplify right side
    480,655.20x = 318,944,125,679.04
  5. Step 5: Solve for x
    x = 318,944,125,679.04/480,655.20
  6. Step 6: Final answer
    x = 663,561.17

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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.