Home / 1,315,909.80-1,972,655.10-1,315,103.40

Finding the Fourth Proportional to 1,315,909.80, 1,972,655.10 and 1,315,103.40

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Solution

The fourth proportional to 1,315,909.80, 1,972,655.10 and 1,315,103.40 is: 1,971,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,909.80 : 1,972,655.10 = 1,315,103.40 : x
  2. Step 2: Convert to fraction form
    1,315,909.80/1,972,655.10 = 1,315,103.40/x
  3. Step 3: Cross multiply
    1,315,909.80x = 1,972,655.10 × 1,315,103.40
  4. Step 4: Simplify right side
    1,315,909.80x = 2,594,245,429,037.34
  5. Step 5: Solve for x
    x = 2,594,245,429,037.34/1,315,909.80
  6. Step 6: Final answer
    x = 1,971,446.24

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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.