Home / 420,550.83-630,583.86-287,592.18

Finding the Fourth Proportional to 420,550.83, 630,583.86 and 287,592.18

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Solution

The fourth proportional to 420,550.83, 630,583.86 and 287,592.18 is: 431,222.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,550.83 : 630,583.86 = 287,592.18 : x
  2. Step 2: Convert to fraction form
    420,550.83/630,583.86 = 287,592.18/x
  3. Step 3: Cross multiply
    420,550.83x = 630,583.86 × 287,592.18
  4. Step 4: Simplify right side
    420,550.83x = 181,350,986,970.22
  5. Step 5: Solve for x
    x = 181,350,986,970.22/420,550.83
  6. Step 6: Final answer
    x = 431,222.52

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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.