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Finding the Fourth Proportional to 580,685.40, 869,861.70 and 403,392.60

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Solution

The fourth proportional to 580,685.40, 869,861.70 and 403,392.60 is: 604,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,685.40 : 869,861.70 = 403,392.60 : x
  2. Step 2: Convert to fraction form
    580,685.40/869,861.70 = 403,392.60/x
  3. Step 3: Cross multiply
    580,685.40x = 869,861.70 × 403,392.60
  4. Step 4: Simplify right side
    580,685.40x = 350,895,772,803.42
  5. Step 5: Solve for x
    x = 350,895,772,803.42/580,685.40
  6. Step 6: Final answer
    x = 604,278.62

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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.