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Finding the Fourth Proportional to 572,564.10, 790,064.11 and 317,866.10

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Solution

The fourth proportional to 572,564.10, 790,064.11 and 317,866.10 is: 438,613.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,564.10 : 790,064.11 = 317,866.10 : x
  2. Step 2: Convert to fraction form
    572,564.10/790,064.11 = 317,866.10/x
  3. Step 3: Cross multiply
    572,564.10x = 790,064.11 × 317,866.10
  4. Step 4: Simplify right side
    572,564.10x = 251,134,597,395.67
  5. Step 5: Solve for x
    x = 251,134,597,395.67/572,564.10
  6. Step 6: Final answer
    x = 438,613.94

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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.