Home / 640,939.20-960,141.60-562,142.40

Finding the Fourth Proportional to 640,939.20, 960,141.60 and 562,142.40

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Solution

The fourth proportional to 640,939.20, 960,141.60 and 562,142.40 is: 842,102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,939.20 : 960,141.60 = 562,142.40 : x
  2. Step 2: Convert to fraction form
    640,939.20/960,141.60 = 562,142.40/x
  3. Step 3: Cross multiply
    640,939.20x = 960,141.60 × 562,142.40
  4. Step 4: Simplify right side
    640,939.20x = 539,736,303,363.84
  5. Step 5: Solve for x
    x = 539,736,303,363.84/640,939.20
  6. Step 6: Final answer
    x = 842,102.19

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1.5x scale

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.