Home / 787,911.40-1,181,876.70-255,428.20

Finding the Fourth Proportional to 787,911.40, 1,181,876.70 and 255,428.20

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Solution

The fourth proportional to 787,911.40, 1,181,876.70 and 255,428.20 is: 383,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,911.40 : 1,181,876.70 = 255,428.20 : x
  2. Step 2: Convert to fraction form
    787,911.40/1,181,876.70 = 255,428.20/x
  3. Step 3: Cross multiply
    787,911.40x = 1,181,876.70 × 255,428.20
  4. Step 4: Simplify right side
    787,911.40x = 301,884,638,102.94
  5. Step 5: Solve for x
    x = 301,884,638,102.94/787,911.40
  6. Step 6: Final answer
    x = 383,145.41

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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.