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Finding the Fourth Proportional to 528,098.40, 790,835.40 and 423,122.40

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Solution

The fourth proportional to 528,098.40, 790,835.40 and 423,122.40 is: 633,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,098.40 : 790,835.40 = 423,122.40 : x
  2. Step 2: Convert to fraction form
    528,098.40/790,835.40 = 423,122.40/x
  3. Step 3: Cross multiply
    528,098.40x = 790,835.40 × 423,122.40
  4. Step 4: Simplify right side
    528,098.40x = 334,620,172,452.96
  5. Step 5: Solve for x
    x = 334,620,172,452.96/528,098.40
  6. Step 6: Final answer
    x = 633,632.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.