Home / 640,436.32-883,836.30-368,545.60

Finding the Fourth Proportional to 640,436.32, 883,836.30 and 368,545.60

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Solution

The fourth proportional to 640,436.32, 883,836.30 and 368,545.60 is: 508,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,436.32 : 883,836.30 = 368,545.60 : x
  2. Step 2: Convert to fraction form
    640,436.32/883,836.30 = 368,545.60/x
  3. Step 3: Cross multiply
    640,436.32x = 883,836.30 × 368,545.60
  4. Step 4: Simplify right side
    640,436.32x = 325,733,979,485.28
  5. Step 5: Solve for x
    x = 325,733,979,485.28/640,436.32
  6. Step 6: Final answer
    x = 508,612.60

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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.