Home / 807,219.20-1,210,828.80-508,620.80

Finding the Fourth Proportional to 807,219.20, 1,210,828.80 and 508,620.80

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Solution

The fourth proportional to 807,219.20, 1,210,828.80 and 508,620.80 is: 762,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,219.20 : 1,210,828.80 = 508,620.80 : x
  2. Step 2: Convert to fraction form
    807,219.20/1,210,828.80 = 508,620.80/x
  3. Step 3: Cross multiply
    807,219.20x = 1,210,828.80 × 508,620.80
  4. Step 4: Simplify right side
    807,219.20x = 615,852,712,919.04
  5. Step 5: Solve for x
    x = 615,852,712,919.04/807,219.20
  6. Step 6: Final answer
    x = 762,931.20

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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.