Home / 558,214.71-770,555.16-395,720.43

Finding the Fourth Proportional to 558,214.71, 770,555.16 and 395,720.43

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Solution

The fourth proportional to 558,214.71, 770,555.16 and 395,720.43 is: 546,249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,214.71 : 770,555.16 = 395,720.43 : x
  2. Step 2: Convert to fraction form
    558,214.71/770,555.16 = 395,720.43/x
  3. Step 3: Cross multiply
    558,214.71x = 770,555.16 × 395,720.43
  4. Step 4: Simplify right side
    558,214.71x = 304,924,419,253.92
  5. Step 5: Solve for x
    x = 304,924,419,253.92/558,214.71
  6. Step 6: Final answer
    x = 546,249.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.