Home / 748,174.78-1,121,201.11-578,907.15

Finding the Fourth Proportional to 748,174.78, 1,121,201.11 and 578,907.15

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Solution

The fourth proportional to 748,174.78, 1,121,201.11 and 578,907.15 is: 867,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,174.78 : 1,121,201.11 = 578,907.15 : x
  2. Step 2: Convert to fraction form
    748,174.78/1,121,201.11 = 578,907.15/x
  3. Step 3: Cross multiply
    748,174.78x = 1,121,201.11 × 578,907.15
  4. Step 4: Simplify right side
    748,174.78x = 649,071,339,166.94
  5. Step 5: Solve for x
    x = 649,071,339,166.94/748,174.78
  6. Step 6: Final answer
    x = 867,539.72

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1.5x scale

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.