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Finding the Fourth Proportional to 867,532.90, 1,299,404.13 and 360,556.78

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Solution

The fourth proportional to 867,532.90, 1,299,404.13 and 360,556.78 is: 540,047.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,532.90 : 1,299,404.13 = 360,556.78 : x
  2. Step 2: Convert to fraction form
    867,532.90/1,299,404.13 = 360,556.78/x
  3. Step 3: Cross multiply
    867,532.90x = 1,299,404.13 × 360,556.78
  4. Step 4: Simplify right side
    867,532.90x = 468,508,969,031.50
  5. Step 5: Solve for x
    x = 468,508,969,031.50/867,532.90
  6. Step 6: Final answer
    x = 540,047.49

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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.