Home / 640,330.15-883,689.62-368,439.35

Finding the Fourth Proportional to 640,330.15, 883,689.62 and 368,439.35

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Solution

The fourth proportional to 640,330.15, 883,689.62 and 368,439.35 is: 508,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,330.15 : 883,689.62 = 368,439.35 : x
  2. Step 2: Convert to fraction form
    640,330.15/883,689.62 = 368,439.35/x
  3. Step 3: Cross multiply
    640,330.15x = 883,689.62 × 368,439.35
  4. Step 4: Simplify right side
    640,330.15x = 325,586,027,352.35
  5. Step 5: Solve for x
    x = 325,586,027,352.35/640,330.15
  6. Step 6: Final answer
    x = 508,465.87

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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.