Home / 990,695.04-1,485,025.92-391,413.12

Finding the Fourth Proportional to 990,695.04, 1,485,025.92 and 391,413.12

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Solution

The fourth proportional to 990,695.04, 1,485,025.92 and 391,413.12 is: 586,718.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,695.04 : 1,485,025.92 = 391,413.12 : x
  2. Step 2: Convert to fraction form
    990,695.04/1,485,025.92 = 391,413.12/x
  3. Step 3: Cross multiply
    990,695.04x = 1,485,025.92 × 391,413.12
  4. Step 4: Simplify right side
    990,695.04x = 581,258,628,628.07
  5. Step 5: Solve for x
    x = 581,258,628,628.07/990,695.04
  6. Step 6: Final answer
    x = 586,718.02

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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.