Home / 756,422.20-1,133,078.10-520,031.80

Finding the Fourth Proportional to 756,422.20, 1,133,078.10 and 520,031.80

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Solution

The fourth proportional to 756,422.20, 1,133,078.10 and 520,031.80 is: 778,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,422.20 : 1,133,078.10 = 520,031.80 : x
  2. Step 2: Convert to fraction form
    756,422.20/1,133,078.10 = 520,031.80/x
  3. Step 3: Cross multiply
    756,422.20x = 1,133,078.10 × 520,031.80
  4. Step 4: Simplify right side
    756,422.20x = 589,236,643,883.58
  5. Step 5: Solve for x
    x = 589,236,643,883.58/756,422.20
  6. Step 6: Final answer
    x = 778,978.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.