Home / 720,245.04-993,945.78-397,947.12

Finding the Fourth Proportional to 720,245.04, 993,945.78 and 397,947.12

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Solution

The fourth proportional to 720,245.04, 993,945.78 and 397,947.12 is: 549,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,245.04 : 993,945.78 = 397,947.12 : x
  2. Step 2: Convert to fraction form
    720,245.04/993,945.78 = 397,947.12/x
  3. Step 3: Cross multiply
    720,245.04x = 993,945.78 × 397,947.12
  4. Step 4: Simplify right side
    720,245.04x = 395,537,860,587.15
  5. Step 5: Solve for x
    x = 395,537,860,587.15/720,245.04
  6. Step 6: Final answer
    x = 549,171.24

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Double scale
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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.