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Finding the Fourth Proportional to 640,980.80, 884,517.60 and 350,535.04

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Solution

The fourth proportional to 640,980.80, 884,517.60 and 350,535.04 is: 483,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,980.80 : 884,517.60 = 350,535.04 : x
  2. Step 2: Convert to fraction form
    640,980.80/884,517.60 = 350,535.04/x
  3. Step 3: Cross multiply
    640,980.80x = 884,517.60 × 350,535.04
  4. Step 4: Simplify right side
    640,980.80x = 310,054,412,296.70
  5. Step 5: Solve for x
    x = 310,054,412,296.70/640,980.80
  6. Step 6: Final answer
    x = 483,718.72

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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.