Home / 565,819.51-780,815.36-311,170.70

Finding the Fourth Proportional to 565,819.51, 780,815.36 and 311,170.70

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Solution

The fourth proportional to 565,819.51, 780,815.36 and 311,170.70 is: 429,407.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,819.51 : 780,815.36 = 311,170.70 : x
  2. Step 2: Convert to fraction form
    565,819.51/780,815.36 = 311,170.70/x
  3. Step 3: Cross multiply
    565,819.51x = 780,815.36 × 311,170.70
  4. Step 4: Simplify right side
    565,819.51x = 242,966,862,141.95
  5. Step 5: Solve for x
    x = 242,966,862,141.95/565,819.51
  6. Step 6: Final answer
    x = 429,407.01

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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.