Home / 706,721.20-1,057,489.80-520,097.20

Finding the Fourth Proportional to 706,721.20, 1,057,489.80 and 520,097.20

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Solution

The fourth proportional to 706,721.20, 1,057,489.80 and 520,097.20 is: 778,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,721.20 : 1,057,489.80 = 520,097.20 : x
  2. Step 2: Convert to fraction form
    706,721.20/1,057,489.80 = 520,097.20/x
  3. Step 3: Cross multiply
    706,721.20x = 1,057,489.80 × 520,097.20
  4. Step 4: Simplify right side
    706,721.20x = 549,997,484,008.56
  5. Step 5: Solve for x
    x = 549,997,484,008.56/706,721.20
  6. Step 6: Final answer
    x = 778,238.27

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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.