Home / 708,109.26-977,195.07-421,641.42

Finding the Fourth Proportional to 708,109.26, 977,195.07 and 421,641.42

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Solution

The fourth proportional to 708,109.26, 977,195.07 and 421,641.42 is: 581,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,109.26 : 977,195.07 = 421,641.42 : x
  2. Step 2: Convert to fraction form
    708,109.26/977,195.07 = 421,641.42/x
  3. Step 3: Cross multiply
    708,109.26x = 977,195.07 × 421,641.42
  4. Step 4: Simplify right side
    708,109.26x = 412,025,916,931.80
  5. Step 5: Solve for x
    x = 412,025,916,931.80/708,109.26
  6. Step 6: Final answer
    x = 581,867.71

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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.