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Finding the Fourth Proportional to 867,073.05, 1,300,494.75 and 393,649.53

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Solution

The fourth proportional to 867,073.05, 1,300,494.75 and 393,649.53 is: 590,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,073.05 : 1,300,494.75 = 393,649.53 : x
  2. Step 2: Convert to fraction form
    867,073.05/1,300,494.75 = 393,649.53/x
  3. Step 3: Cross multiply
    867,073.05x = 1,300,494.75 × 393,649.53
  4. Step 4: Simplify right side
    867,073.05x = 511,939,147,104.97
  5. Step 5: Solve for x
    x = 511,939,147,104.97/867,073.05
  6. Step 6: Final answer
    x = 590,422.16

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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.