Home / 881,279.76-1,216,167.28-499,332.32

Finding the Fourth Proportional to 881,279.76, 1,216,167.28 and 499,332.32

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Solution

The fourth proportional to 881,279.76, 1,216,167.28 and 499,332.32 is: 689,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,279.76 : 1,216,167.28 = 499,332.32 : x
  2. Step 2: Convert to fraction form
    881,279.76/1,216,167.28 = 499,332.32/x
  3. Step 3: Cross multiply
    881,279.76x = 1,216,167.28 × 499,332.32
  4. Step 4: Simplify right side
    881,279.76x = 607,271,629,430.49
  5. Step 5: Solve for x
    x = 607,271,629,430.49/881,279.76
  6. Step 6: Final answer
    x = 689,079.29

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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.