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Finding the Fourth Proportional to 570,623.28, 787,483.86 and 315,974.46

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Solution

The fourth proportional to 570,623.28, 787,483.86 and 315,974.46 is: 436,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,623.28 : 787,483.86 = 315,974.46 : x
  2. Step 2: Convert to fraction form
    570,623.28/787,483.86 = 315,974.46/x
  3. Step 3: Cross multiply
    570,623.28x = 787,483.86 × 315,974.46
  4. Step 4: Simplify right side
    570,623.28x = 248,824,787,422.22
  5. Step 5: Solve for x
    x = 248,824,787,422.22/570,623.28
  6. Step 6: Final answer
    x = 436,057.90

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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.