Home / 420,527.70-630,549.16-287,569.04

Finding the Fourth Proportional to 420,527.70, 630,549.16 and 287,569.04

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Solution

The fourth proportional to 420,527.70, 630,549.16 and 287,569.04 is: 431,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,527.70 : 630,549.16 = 287,569.04 : x
  2. Step 2: Convert to fraction form
    420,527.70/630,549.16 = 287,569.04/x
  3. Step 3: Cross multiply
    420,527.70x = 630,549.16 × 287,569.04
  4. Step 4: Simplify right side
    420,527.70x = 181,326,416,614.01
  5. Step 5: Solve for x
    x = 181,326,416,614.01/420,527.70
  6. Step 6: Final answer
    x = 431,187.81

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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.