Home / 691,719.50-955,017.09-433,949.78

Finding the Fourth Proportional to 691,719.50, 955,017.09 and 433,949.78

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Solution

The fourth proportional to 691,719.50, 955,017.09 and 433,949.78 is: 599,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,719.50 : 955,017.09 = 433,949.78 : x
  2. Step 2: Convert to fraction form
    691,719.50/955,017.09 = 433,949.78/x
  3. Step 3: Cross multiply
    691,719.50x = 955,017.09 × 433,949.78
  4. Step 4: Simplify right side
    691,719.50x = 414,429,456,101.74
  5. Step 5: Solve for x
    x = 414,429,456,101.74/691,719.50
  6. Step 6: Final answer
    x = 599,129.35

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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.