Home / 1,123,145.40-1,681,218.90-808,217.40

Finding the Fourth Proportional to 1,123,145.40, 1,681,218.90 and 808,217.40

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Solution

The fourth proportional to 1,123,145.40, 1,681,218.90 and 808,217.40 is: 1,209,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,145.40 : 1,681,218.90 = 808,217.40 : x
  2. Step 2: Convert to fraction form
    1,123,145.40/1,681,218.90 = 808,217.40/x
  3. Step 3: Cross multiply
    1,123,145.40x = 1,681,218.90 × 808,217.40
  4. Step 4: Simplify right side
    1,123,145.40x = 1,358,790,368,188.86
  5. Step 5: Solve for x
    x = 1,358,790,368,188.86/1,123,145.40
  6. Step 6: Final answer
    x = 1,209,808.07

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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.