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Finding the Fourth Proportional to 479,611.60, 719,417.40 and 459,134.80

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Solution

The fourth proportional to 479,611.60, 719,417.40 and 459,134.80 is: 688,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,611.60 : 719,417.40 = 459,134.80 : x
  2. Step 2: Convert to fraction form
    479,611.60/719,417.40 = 459,134.80/x
  3. Step 3: Cross multiply
    479,611.60x = 719,417.40 × 459,134.80
  4. Step 4: Simplify right side
    479,611.60x = 330,309,564,065.52
  5. Step 5: Solve for x
    x = 330,309,564,065.52/479,611.60
  6. Step 6: Final answer
    x = 688,702.20

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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.