Home / 640,845.90-960,232.05-403,764.30

Finding the Fourth Proportional to 640,845.90, 960,232.05 and 403,764.30

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Solution

The fourth proportional to 640,845.90, 960,232.05 and 403,764.30 is: 604,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,845.90 : 960,232.05 = 403,764.30 : x
  2. Step 2: Convert to fraction form
    640,845.90/960,232.05 = 403,764.30/x
  3. Step 3: Cross multiply
    640,845.90x = 960,232.05 × 403,764.30
  4. Step 4: Simplify right side
    640,845.90x = 387,707,421,505.82
  5. Step 5: Solve for x
    x = 387,707,421,505.82/640,845.90
  6. Step 6: Final answer
    x = 604,993.22

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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.