Home / 724,888.85-1,000,358.96-398,215.64

Finding the Fourth Proportional to 724,888.85, 1,000,358.96 and 398,215.64

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Solution

The fourth proportional to 724,888.85, 1,000,358.96 and 398,215.64 is: 549,544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,888.85 : 1,000,358.96 = 398,215.64 : x
  2. Step 2: Convert to fraction form
    724,888.85/1,000,358.96 = 398,215.64/x
  3. Step 3: Cross multiply
    724,888.85x = 1,000,358.96 × 398,215.64
  4. Step 4: Simplify right side
    724,888.85x = 398,358,576,493.26
  5. Step 5: Solve for x
    x = 398,358,576,493.26/724,888.85
  6. Step 6: Final answer
    x = 549,544.36

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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.