Home / 868,101.40-1,300,308.90-720,645.40

Finding the Fourth Proportional to 868,101.40, 1,300,308.90 and 720,645.40

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Solution

The fourth proportional to 868,101.40, 1,300,308.90 and 720,645.40 is: 1,079,437.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,101.40 : 1,300,308.90 = 720,645.40 : x
  2. Step 2: Convert to fraction form
    868,101.40/1,300,308.90 = 720,645.40/x
  3. Step 3: Cross multiply
    868,101.40x = 1,300,308.90 × 720,645.40
  4. Step 4: Simplify right side
    868,101.40x = 937,061,627,364.06
  5. Step 5: Solve for x
    x = 937,061,627,364.06/868,101.40
  6. Step 6: Final answer
    x = 1,079,437.99

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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.