Home / 777,727.80-1,073,264.12-420,031.80

Finding the Fourth Proportional to 777,727.80, 1,073,264.12 and 420,031.80

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Solution

The fourth proportional to 777,727.80, 1,073,264.12 and 420,031.80 is: 579,643.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,727.80 : 1,073,264.12 = 420,031.80 : x
  2. Step 2: Convert to fraction form
    777,727.80/1,073,264.12 = 420,031.80/x
  3. Step 3: Cross multiply
    777,727.80x = 1,073,264.12 × 420,031.80
  4. Step 4: Simplify right side
    777,727.80x = 450,805,060,199.02
  5. Step 5: Solve for x
    x = 450,805,060,199.02/777,727.80
  6. Step 6: Final answer
    x = 579,643.75

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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.