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Finding the Fourth Proportional to 570,620.49, 787,446.61 and 315,966.21

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Solution

The fourth proportional to 570,620.49, 787,446.61 and 315,966.21 is: 436,028.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,620.49 : 787,446.61 = 315,966.21 : x
  2. Step 2: Convert to fraction form
    570,620.49/787,446.61 = 315,966.21/x
  3. Step 3: Cross multiply
    570,620.49x = 787,446.61 × 315,966.21
  4. Step 4: Simplify right side
    570,620.49x = 248,806,520,939.05
  5. Step 5: Solve for x
    x = 248,806,520,939.05/570,620.49
  6. Step 6: Final answer
    x = 436,028.02

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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.