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Finding the Fourth Proportional to 570,732.48, 787,601.16 and 316,078.20

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Solution

The fourth proportional to 570,732.48, 787,601.16 and 316,078.20 is: 436,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,732.48 : 787,601.16 = 316,078.20 : x
  2. Step 2: Convert to fraction form
    570,732.48/787,601.16 = 316,078.20/x
  3. Step 3: Cross multiply
    570,732.48x = 787,601.16 × 316,078.20
  4. Step 4: Simplify right side
    570,732.48x = 248,943,556,970.71
  5. Step 5: Solve for x
    x = 248,943,556,970.71/570,732.48
  6. Step 6: Final answer
    x = 436,182.56

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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.