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Finding the Fourth Proportional to 867,326.81, 1,196,920.42 and 480,148.65

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Solution

The fourth proportional to 867,326.81, 1,196,920.42 and 480,148.65 is: 662,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,326.81 : 1,196,920.42 = 480,148.65 : x
  2. Step 2: Convert to fraction form
    867,326.81/1,196,920.42 = 480,148.65/x
  3. Step 3: Cross multiply
    867,326.81x = 1,196,920.42 × 480,148.65
  4. Step 4: Simplify right side
    867,326.81x = 574,699,723,820.43
  5. Step 5: Solve for x
    x = 574,699,723,820.43/867,326.81
  6. Step 6: Final answer
    x = 662,610.35

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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.