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Finding the Fourth Proportional to 688,574.86, 950,172.72 and 382,631.80

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Solution

The fourth proportional to 688,574.86, 950,172.72 and 382,631.80 is: 527,998.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,574.86 : 950,172.72 = 382,631.80 : x
  2. Step 2: Convert to fraction form
    688,574.86/950,172.72 = 382,631.80/x
  3. Step 3: Cross multiply
    688,574.86x = 950,172.72 × 382,631.80
  4. Step 4: Simplify right side
    688,574.86x = 363,566,298,164.50
  5. Step 5: Solve for x
    x = 363,566,298,164.50/688,574.86
  6. Step 6: Final answer
    x = 527,998.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.