Home / 753,418.81-1,039,729.11-409,261.42

Finding the Fourth Proportional to 753,418.81, 1,039,729.11 and 409,261.42

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Solution

The fourth proportional to 753,418.81, 1,039,729.11 and 409,261.42 is: 564,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,418.81 : 1,039,729.11 = 409,261.42 : x
  2. Step 2: Convert to fraction form
    753,418.81/1,039,729.11 = 409,261.42/x
  3. Step 3: Cross multiply
    753,418.81x = 1,039,729.11 × 409,261.42
  4. Step 4: Simplify right side
    753,418.81x = 425,521,011,973.94
  5. Step 5: Solve for x
    x = 425,521,011,973.94/753,418.81
  6. Step 6: Final answer
    x = 564,786.82

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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.