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Finding the Fourth Proportional to 508,889.10, 763,333.65 and 430,157.10

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Solution

The fourth proportional to 508,889.10, 763,333.65 and 430,157.10 is: 645,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,889.10 : 763,333.65 = 430,157.10 : x
  2. Step 2: Convert to fraction form
    508,889.10/763,333.65 = 430,157.10/x
  3. Step 3: Cross multiply
    508,889.10x = 763,333.65 × 430,157.10
  4. Step 4: Simplify right side
    508,889.10x = 328,353,389,216.42
  5. Step 5: Solve for x
    x = 328,353,389,216.42/508,889.10
  6. Step 6: Final answer
    x = 645,235.65

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Similar ratio
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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.