Home / 777,823.20-1,073,395.80-420,127.20

Finding the Fourth Proportional to 777,823.20, 1,073,395.80 and 420,127.20

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Solution

The fourth proportional to 777,823.20, 1,073,395.80 and 420,127.20 is: 579,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,823.20 : 1,073,395.80 = 420,127.20 : x
  2. Step 2: Convert to fraction form
    777,823.20/1,073,395.80 = 420,127.20/x
  3. Step 3: Cross multiply
    777,823.20x = 1,073,395.80 × 420,127.20
  4. Step 4: Simplify right side
    777,823.20x = 450,962,771,945.76
  5. Step 5: Solve for x
    x = 450,962,771,945.76/777,823.20
  6. Step 6: Final answer
    x = 579,775.42

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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.