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Finding the Fourth Proportional to 710,382.54, 980,373.15 and 404,485.65

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Solution

The fourth proportional to 710,382.54, 980,373.15 and 404,485.65 is: 558,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,382.54 : 980,373.15 = 404,485.65 : x
  2. Step 2: Convert to fraction form
    710,382.54/980,373.15 = 404,485.65/x
  3. Step 3: Cross multiply
    710,382.54x = 980,373.15 × 404,485.65
  4. Step 4: Simplify right side
    710,382.54x = 396,546,870,820.30
  5. Step 5: Solve for x
    x = 396,546,870,820.30/710,382.54
  6. Step 6: Final answer
    x = 558,215.96

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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.