Home / 640,979.20-960,201.60-562,182.40

Finding the Fourth Proportional to 640,979.20, 960,201.60 and 562,182.40

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Solution

The fourth proportional to 640,979.20, 960,201.60 and 562,182.40 is: 842,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,979.20 : 960,201.60 = 562,182.40 : x
  2. Step 2: Convert to fraction form
    640,979.20/960,201.60 = 562,182.40/x
  3. Step 3: Cross multiply
    640,979.20x = 960,201.60 × 562,182.40
  4. Step 4: Simplify right side
    640,979.20x = 539,808,439,971.84
  5. Step 5: Solve for x
    x = 539,808,439,971.84/640,979.20
  6. Step 6: Final answer
    x = 842,162.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.