Home / 690,720.95-1,036,221.55-217,296.20

Finding the Fourth Proportional to 690,720.95, 1,036,221.55 and 217,296.20

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Solution

The fourth proportional to 690,720.95, 1,036,221.55 and 217,296.20 is: 325,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,720.95 : 1,036,221.55 = 217,296.20 : x
  2. Step 2: Convert to fraction form
    690,720.95/1,036,221.55 = 217,296.20/x
  3. Step 3: Cross multiply
    690,720.95x = 1,036,221.55 × 217,296.20
  4. Step 4: Simplify right side
    690,720.95x = 225,167,005,173.11
  5. Step 5: Solve for x
    x = 225,167,005,173.11/690,720.95
  6. Step 6: Final answer
    x = 325,988.38

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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.