Home / 679,139.20-937,228.88-373,213.28

Finding the Fourth Proportional to 679,139.20, 937,228.88 and 373,213.28

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Solution

The fourth proportional to 679,139.20, 937,228.88 and 373,213.28 is: 515,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,139.20 : 937,228.88 = 373,213.28 : x
  2. Step 2: Convert to fraction form
    679,139.20/937,228.88 = 373,213.28/x
  3. Step 3: Cross multiply
    679,139.20x = 937,228.88 × 373,213.28
  4. Step 4: Simplify right side
    679,139.20x = 349,786,264,415.53
  5. Step 5: Solve for x
    x = 349,786,264,415.53/679,139.20
  6. Step 6: Final answer
    x = 515,043.55

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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.