Home / 690,669.40-1,036,004.10-217,499.80

Finding the Fourth Proportional to 690,669.40, 1,036,004.10 and 217,499.80

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Solution

The fourth proportional to 690,669.40, 1,036,004.10 and 217,499.80 is: 326,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,669.40 : 1,036,004.10 = 217,499.80 : x
  2. Step 2: Convert to fraction form
    690,669.40/1,036,004.10 = 217,499.80/x
  3. Step 3: Cross multiply
    690,669.40x = 1,036,004.10 × 217,499.80
  4. Step 4: Simplify right side
    690,669.40x = 225,330,684,549.18
  5. Step 5: Solve for x
    x = 225,330,684,549.18/690,669.40
  6. Step 6: Final answer
    x = 326,249.70

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Double scale
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Similar ratio
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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.