Home / 689,413.06-951,079.08-402,804.28

Finding the Fourth Proportional to 689,413.06, 951,079.08 and 402,804.28

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Solution

The fourth proportional to 689,413.06, 951,079.08 and 402,804.28 is: 555,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,413.06 : 951,079.08 = 402,804.28 : x
  2. Step 2: Convert to fraction form
    689,413.06/951,079.08 = 402,804.28/x
  3. Step 3: Cross multiply
    689,413.06x = 951,079.08 × 402,804.28
  4. Step 4: Simplify right side
    689,413.06x = 383,098,724,042.46
  5. Step 5: Solve for x
    x = 383,098,724,042.46/689,413.06
  6. Step 6: Final answer
    x = 555,688.23

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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.