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Finding the Fourth Proportional to 570,615.73, 787,449.66 and 315,966.91

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Solution

The fourth proportional to 570,615.73, 787,449.66 and 315,966.91 is: 436,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,615.73 : 787,449.66 = 315,966.91 : x
  2. Step 2: Convert to fraction form
    570,615.73/787,449.66 = 315,966.91/x
  3. Step 3: Cross multiply
    570,615.73x = 787,449.66 × 315,966.91
  4. Step 4: Simplify right side
    570,615.73x = 248,808,035,850.75
  5. Step 5: Solve for x
    x = 248,808,035,850.75/570,615.73
  6. Step 6: Final answer
    x = 436,034.31

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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.