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Finding the Fourth Proportional to 670,734.03, 925,301.97 and 398,649.36

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Solution

The fourth proportional to 670,734.03, 925,301.97 and 398,649.36 is: 549,951.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,734.03 : 925,301.97 = 398,649.36 : x
  2. Step 2: Convert to fraction form
    670,734.03/925,301.97 = 398,649.36/x
  3. Step 3: Cross multiply
    670,734.03x = 925,301.97 × 398,649.36
  4. Step 4: Simplify right side
    670,734.03x = 368,871,038,147.24
  5. Step 5: Solve for x
    x = 368,871,038,147.24/670,734.03
  6. Step 6: Final answer
    x = 549,951.28

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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.