Home / 688,992.50-1,033,421.90-209,224.46

Finding the Fourth Proportional to 688,992.50, 1,033,421.90 and 209,224.46

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Solution

The fourth proportional to 688,992.50, 1,033,421.90 and 209,224.46 is: 313,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,992.50 : 1,033,421.90 = 209,224.46 : x
  2. Step 2: Convert to fraction form
    688,992.50/1,033,421.90 = 209,224.46/x
  3. Step 3: Cross multiply
    688,992.50x = 1,033,421.90 × 209,224.46
  4. Step 4: Simplify right side
    688,992.50x = 216,217,138,979.67
  5. Step 5: Solve for x
    x = 216,217,138,979.67/688,992.50
  6. Step 6: Final answer
    x = 313,816.39

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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.