Home / 1,386,805.20-2,080,207.80-545,384.40

Finding the Fourth Proportional to 1,386,805.20, 2,080,207.80 and 545,384.40

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Solution

The fourth proportional to 1,386,805.20, 2,080,207.80 and 545,384.40 is: 818,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,805.20 : 2,080,207.80 = 545,384.40 : x
  2. Step 2: Convert to fraction form
    1,386,805.20/2,080,207.80 = 545,384.40/x
  3. Step 3: Cross multiply
    1,386,805.20x = 2,080,207.80 × 545,384.40
  4. Step 4: Simplify right side
    1,386,805.20x = 1,134,512,882,878.32
  5. Step 5: Solve for x
    x = 1,134,512,882,878.32/1,386,805.20
  6. Step 6: Final answer
    x = 818,076.60

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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.