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Finding the Fourth Proportional to 542,486.40, 813,729.60 and 526,934.40

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Solution

The fourth proportional to 542,486.40, 813,729.60 and 526,934.40 is: 790,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,486.40 : 813,729.60 = 526,934.40 : x
  2. Step 2: Convert to fraction form
    542,486.40/813,729.60 = 526,934.40/x
  3. Step 3: Cross multiply
    542,486.40x = 813,729.60 × 526,934.40
  4. Step 4: Simplify right side
    542,486.40x = 428,782,118,538.24
  5. Step 5: Solve for x
    x = 428,782,118,538.24/542,486.40
  6. Step 6: Final answer
    x = 790,401.60

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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.