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Finding the Fourth Proportional to 640,528.14, 884,016.72 and 368,590.48

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Solution

The fourth proportional to 640,528.14, 884,016.72 and 368,590.48 is: 508,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,528.14 : 884,016.72 = 368,590.48 : x
  2. Step 2: Convert to fraction form
    640,528.14/884,016.72 = 368,590.48/x
  3. Step 3: Cross multiply
    640,528.14x = 884,016.72 × 368,590.48
  4. Step 4: Simplify right side
    640,528.14x = 325,840,147,152.83
  5. Step 5: Solve for x
    x = 325,840,147,152.83/640,528.14
  6. Step 6: Final answer
    x = 508,705.44

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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.