Home / 420,316.40-580,036.44-269,413.28

Finding the Fourth Proportional to 420,316.40, 580,036.44 and 269,413.28

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Solution

The fourth proportional to 420,316.40, 580,036.44 and 269,413.28 is: 371,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,316.40 : 580,036.44 = 269,413.28 : x
  2. Step 2: Convert to fraction form
    420,316.40/580,036.44 = 269,413.28/x
  3. Step 3: Cross multiply
    420,316.40x = 580,036.44 × 269,413.28
  4. Step 4: Simplify right side
    420,316.40x = 156,269,519,819.92
  5. Step 5: Solve for x
    x = 156,269,519,819.92/420,316.40
  6. Step 6: Final answer
    x = 371,790.20

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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.