Home / 766,098.15-1,148,348.91-428,644.05

Finding the Fourth Proportional to 766,098.15, 1,148,348.91 and 428,644.05

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Solution

The fourth proportional to 766,098.15, 1,148,348.91 and 428,644.05 is: 642,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,098.15 : 1,148,348.91 = 428,644.05 : x
  2. Step 2: Convert to fraction form
    766,098.15/1,148,348.91 = 428,644.05/x
  3. Step 3: Cross multiply
    766,098.15x = 1,148,348.91 × 428,644.05
  4. Step 4: Simplify right side
    766,098.15x = 492,232,927,595.49
  5. Step 5: Solve for x
    x = 492,232,927,595.49/766,098.15
  6. Step 6: Final answer
    x = 642,519.41

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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.