Home / 1,139,648.80-1,707,140.40-578,999.20

Finding the Fourth Proportional to 1,139,648.80, 1,707,140.40 and 578,999.20

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Solution

The fourth proportional to 1,139,648.80, 1,707,140.40 and 578,999.20 is: 867,313.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,648.80 : 1,707,140.40 = 578,999.20 : x
  2. Step 2: Convert to fraction form
    1,139,648.80/1,707,140.40 = 578,999.20/x
  3. Step 3: Cross multiply
    1,139,648.80x = 1,707,140.40 × 578,999.20
  4. Step 4: Simplify right side
    1,139,648.80x = 988,432,925,887.68
  5. Step 5: Solve for x
    x = 988,432,925,887.68/1,139,648.80
  6. Step 6: Final answer
    x = 867,313.62

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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.