Home / 724,887.72-1,000,357.44-398,214.52

Finding the Fourth Proportional to 724,887.72, 1,000,357.44 and 398,214.52

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Solution

The fourth proportional to 724,887.72, 1,000,357.44 and 398,214.52 is: 549,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,887.72 : 1,000,357.44 = 398,214.52 : x
  2. Step 2: Convert to fraction form
    724,887.72/1,000,357.44 = 398,214.52/x
  3. Step 3: Cross multiply
    724,887.72x = 1,000,357.44 × 398,214.52
  4. Step 4: Simplify right side
    724,887.72x = 398,356,857,798.03
  5. Step 5: Solve for x
    x = 398,356,857,798.03/724,887.72
  6. Step 6: Final answer
    x = 549,542.84

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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.