Home / 745,264-1,028,466.76-405,734.72

Finding the Fourth Proportional to 745,264, 1,028,466.76 and 405,734.72

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Solution

The fourth proportional to 745,264, 1,028,466.76 and 405,734.72 is: 559,915.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,264 : 1,028,466.76 = 405,734.72 : x
  2. Step 2: Convert to fraction form
    745,264/1,028,466.76 = 405,734.72/x
  3. Step 3: Cross multiply
    745,264x = 1,028,466.76 × 405,734.72
  4. Step 4: Simplify right side
    745,264x = 417,284,672,897.91
  5. Step 5: Solve for x
    x = 417,284,672,897.91/745,264
  6. Step 6: Final answer
    x = 559,915.24

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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.