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Finding the Fourth Proportional to 659,457.55, 989,184.78 and 433,181.47

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Solution

The fourth proportional to 659,457.55, 989,184.78 and 433,181.47 is: 649,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,457.55 : 989,184.78 = 433,181.47 : x
  2. Step 2: Convert to fraction form
    659,457.55/989,184.78 = 433,181.47/x
  3. Step 3: Cross multiply
    659,457.55x = 989,184.78 × 433,181.47
  4. Step 4: Simplify right side
    659,457.55x = 428,496,516,483.79
  5. Step 5: Solve for x
    x = 428,496,516,483.79/659,457.55
  6. Step 6: Final answer
    x = 649,771.19

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Similar ratio
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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.