Home / 687,847.70-1,031,771.55-519,886.10

Finding the Fourth Proportional to 687,847.70, 1,031,771.55 and 519,886.10

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Solution

The fourth proportional to 687,847.70, 1,031,771.55 and 519,886.10 is: 779,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,847.70 : 1,031,771.55 = 519,886.10 : x
  2. Step 2: Convert to fraction form
    687,847.70/1,031,771.55 = 519,886.10/x
  3. Step 3: Cross multiply
    687,847.70x = 1,031,771.55 × 519,886.10
  4. Step 4: Simplify right side
    687,847.70x = 536,403,687,220.46
  5. Step 5: Solve for x
    x = 536,403,687,220.46/687,847.70
  6. Step 6: Final answer
    x = 779,829.15

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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.