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Finding the Fourth Proportional to 481,014.60, 721,521.90 and 402,865.80

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Solution

The fourth proportional to 481,014.60, 721,521.90 and 402,865.80 is: 604,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,014.60 : 721,521.90 = 402,865.80 : x
  2. Step 2: Convert to fraction form
    481,014.60/721,521.90 = 402,865.80/x
  3. Step 3: Cross multiply
    481,014.60x = 721,521.90 × 402,865.80
  4. Step 4: Simplify right side
    481,014.60x = 290,676,497,461.02
  5. Step 5: Solve for x
    x = 290,676,497,461.02/481,014.60
  6. Step 6: Final answer
    x = 604,298.70

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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.