Home / 815,290.26-1,125,132.93-471,114.78

Finding the Fourth Proportional to 815,290.26, 1,125,132.93 and 471,114.78

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Solution

The fourth proportional to 815,290.26, 1,125,132.93 and 471,114.78 is: 650,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,290.26 : 1,125,132.93 = 471,114.78 : x
  2. Step 2: Convert to fraction form
    815,290.26/1,125,132.93 = 471,114.78/x
  3. Step 3: Cross multiply
    815,290.26x = 1,125,132.93 × 471,114.78
  4. Step 4: Simplify right side
    815,290.26x = 530,066,752,787.71
  5. Step 5: Solve for x
    x = 530,066,752,787.71/815,290.26
  6. Step 6: Final answer
    x = 650,157.10

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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.