Home / 748,813.20-1,123,219.80-328,909.20

Finding the Fourth Proportional to 748,813.20, 1,123,219.80 and 328,909.20

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Solution

The fourth proportional to 748,813.20, 1,123,219.80 and 328,909.20 is: 493,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,813.20 : 1,123,219.80 = 328,909.20 : x
  2. Step 2: Convert to fraction form
    748,813.20/1,123,219.80 = 328,909.20/x
  3. Step 3: Cross multiply
    748,813.20x = 1,123,219.80 × 328,909.20
  4. Step 4: Simplify right side
    748,813.20x = 369,437,325,842.16
  5. Step 5: Solve for x
    x = 369,437,325,842.16/748,813.20
  6. Step 6: Final answer
    x = 493,363.80

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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.