Home / 816,479.45-1,126,780.05-453,909.32

Finding the Fourth Proportional to 816,479.45, 1,126,780.05 and 453,909.32

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Solution

The fourth proportional to 816,479.45, 1,126,780.05 and 453,909.32 is: 626,416.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,479.45 : 1,126,780.05 = 453,909.32 : x
  2. Step 2: Convert to fraction form
    816,479.45/1,126,780.05 = 453,909.32/x
  3. Step 3: Cross multiply
    816,479.45x = 1,126,780.05 × 453,909.32
  4. Step 4: Simplify right side
    816,479.45x = 511,455,960,651.17
  5. Step 5: Solve for x
    x = 511,455,960,651.17/816,479.45
  6. Step 6: Final answer
    x = 626,416.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.