Home / 813,977.50-1,123,288.96-456,281.50

Finding the Fourth Proportional to 813,977.50, 1,123,288.96 and 456,281.50

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Solution

The fourth proportional to 813,977.50, 1,123,288.96 and 456,281.50 is: 629,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,977.50 : 1,123,288.96 = 456,281.50 : x
  2. Step 2: Convert to fraction form
    813,977.50/1,123,288.96 = 456,281.50/x
  3. Step 3: Cross multiply
    813,977.50x = 1,123,288.96 × 456,281.50
  4. Step 4: Simplify right side
    813,977.50x = 512,535,971,602.24
  5. Step 5: Solve for x
    x = 512,535,971,602.24/813,977.50
  6. Step 6: Final answer
    x = 629,668.48

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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.