Home / 886,123.68-1,222,689.38-498,878.88

Finding the Fourth Proportional to 886,123.68, 1,222,689.38 and 498,878.88

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Solution

The fourth proportional to 886,123.68, 1,222,689.38 and 498,878.88 is: 688,362.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,123.68 : 1,222,689.38 = 498,878.88 : x
  2. Step 2: Convert to fraction form
    886,123.68/1,222,689.38 = 498,878.88/x
  3. Step 3: Cross multiply
    886,123.68x = 1,222,689.38 × 498,878.88
  4. Step 4: Simplify right side
    886,123.68x = 609,973,905,987.90
  5. Step 5: Solve for x
    x = 609,973,905,987.90/886,123.68
  6. Step 6: Final answer
    x = 688,362.04

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1.5x scale

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.