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Finding the Fourth Proportional to 570,291.57, 787,177.71 and 328,735.67

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Solution

The fourth proportional to 570,291.57, 787,177.71 and 328,735.67 is: 453,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,291.57 : 787,177.71 = 328,735.67 : x
  2. Step 2: Convert to fraction form
    570,291.57/787,177.71 = 328,735.67/x
  3. Step 3: Cross multiply
    570,291.57x = 787,177.71 × 328,735.67
  4. Step 4: Simplify right side
    570,291.57x = 258,773,387,970.03
  5. Step 5: Solve for x
    x = 258,773,387,970.03/570,291.57
  6. Step 6: Final answer
    x = 453,756.29

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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.