Home / 687,848.70-1,031,773.05-519,887.10

Finding the Fourth Proportional to 687,848.70, 1,031,773.05 and 519,887.10

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Solution

The fourth proportional to 687,848.70, 1,031,773.05 and 519,887.10 is: 779,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,848.70 : 1,031,773.05 = 519,887.10 : x
  2. Step 2: Convert to fraction form
    687,848.70/1,031,773.05 = 519,887.10/x
  3. Step 3: Cross multiply
    687,848.70x = 1,031,773.05 × 519,887.10
  4. Step 4: Simplify right side
    687,848.70x = 536,405,498,822.66
  5. Step 5: Solve for x
    x = 536,405,498,822.66/687,848.70
  6. Step 6: Final answer
    x = 779,830.65

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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.