Home / 720,011.70-1,080,017.55-519,909.30

Finding the Fourth Proportional to 720,011.70, 1,080,017.55 and 519,909.30

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Solution

The fourth proportional to 720,011.70, 1,080,017.55 and 519,909.30 is: 779,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,011.70 : 1,080,017.55 = 519,909.30 : x
  2. Step 2: Convert to fraction form
    720,011.70/1,080,017.55 = 519,909.30/x
  3. Step 3: Cross multiply
    720,011.70x = 1,080,017.55 × 519,909.30
  4. Step 4: Simplify right side
    720,011.70x = 561,511,168,408.22
  5. Step 5: Solve for x
    x = 561,511,168,408.22/720,011.70
  6. Step 6: Final answer
    x = 779,863.95

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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.