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Finding the Fourth Proportional to 649,223.59, 978,266.80 and 533,487.55

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Solution

The fourth proportional to 649,223.59, 978,266.80 and 533,487.55 is: 803,872.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,223.59 : 978,266.80 = 533,487.55 : x
  2. Step 2: Convert to fraction form
    649,223.59/978,266.80 = 533,487.55/x
  3. Step 3: Cross multiply
    649,223.59x = 978,266.80 × 533,487.55
  4. Step 4: Simplify right side
    649,223.59x = 521,893,158,378.34
  5. Step 5: Solve for x
    x = 521,893,158,378.34/649,223.59
  6. Step 6: Final answer
    x = 803,872.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.