Home / 781,471.80-1,172,207.70-249,031.80

Finding the Fourth Proportional to 781,471.80, 1,172,207.70 and 249,031.80

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Solution

The fourth proportional to 781,471.80, 1,172,207.70 and 249,031.80 is: 373,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,471.80 : 1,172,207.70 = 249,031.80 : x
  2. Step 2: Convert to fraction form
    781,471.80/1,172,207.70 = 249,031.80/x
  3. Step 3: Cross multiply
    781,471.80x = 1,172,207.70 × 249,031.80
  4. Step 4: Simplify right side
    781,471.80x = 291,916,993,504.86
  5. Step 5: Solve for x
    x = 291,916,993,504.86/781,471.80
  6. Step 6: Final answer
    x = 373,547.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.