Home / 688,987.62-1,033,414.60-209,219.56

Finding the Fourth Proportional to 688,987.62, 1,033,414.60 and 209,219.56

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Solution

The fourth proportional to 688,987.62, 1,033,414.60 and 209,219.56 is: 313,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,987.62 : 1,033,414.60 = 209,219.56 : x
  2. Step 2: Convert to fraction form
    688,987.62/1,033,414.60 = 209,219.56/x
  3. Step 3: Cross multiply
    688,987.62x = 1,033,414.60 × 209,219.56
  4. Step 4: Simplify right side
    688,987.62x = 216,210,547,909.58
  5. Step 5: Solve for x
    x = 216,210,547,909.58/688,987.62
  6. Step 6: Final answer
    x = 313,809.05

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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.