Home / 640,926.20-960,122.10-562,129.40

Finding the Fourth Proportional to 640,926.20, 960,122.10 and 562,129.40

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Solution

The fourth proportional to 640,926.20, 960,122.10 and 562,129.40 is: 842,082.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,926.20 : 960,122.10 = 562,129.40 : x
  2. Step 2: Convert to fraction form
    640,926.20/960,122.10 = 562,129.40/x
  3. Step 3: Cross multiply
    640,926.20x = 960,122.10 × 562,129.40
  4. Step 4: Simplify right side
    640,926.20x = 539,712,859,999.74
  5. Step 5: Solve for x
    x = 539,712,859,999.74/640,926.20
  6. Step 6: Final answer
    x = 842,082.69

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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.