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Finding the Fourth Proportional to 572,325.98, 790,021.92 and 491,428.58

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Solution

The fourth proportional to 572,325.98, 790,021.92 and 491,428.58 is: 678,353.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,325.98 : 790,021.92 = 491,428.58 : x
  2. Step 2: Convert to fraction form
    572,325.98/790,021.92 = 491,428.58/x
  3. Step 3: Cross multiply
    572,325.98x = 790,021.92 × 491,428.58
  4. Step 4: Simplify right side
    572,325.98x = 388,239,350,314.47
  5. Step 5: Solve for x
    x = 388,239,350,314.47/572,325.98
  6. Step 6: Final answer
    x = 678,353.53

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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.