Home / 815,730.90-1,223,596.35-254,765.40

Finding the Fourth Proportional to 815,730.90, 1,223,596.35 and 254,765.40

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Solution

The fourth proportional to 815,730.90, 1,223,596.35 and 254,765.40 is: 382,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,730.90 : 1,223,596.35 = 254,765.40 : x
  2. Step 2: Convert to fraction form
    815,730.90/1,223,596.35 = 254,765.40/x
  3. Step 3: Cross multiply
    815,730.90x = 1,223,596.35 × 254,765.40
  4. Step 4: Simplify right side
    815,730.90x = 311,730,013,546.29
  5. Step 5: Solve for x
    x = 311,730,013,546.29/815,730.90
  6. Step 6: Final answer
    x = 382,148.10

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1.5x scale

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.