Home / 663,738.04-916,047.78-422,044.60

Finding the Fourth Proportional to 663,738.04, 916,047.78 and 422,044.60

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Solution

The fourth proportional to 663,738.04, 916,047.78 and 422,044.60 is: 582,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,738.04 : 916,047.78 = 422,044.60 : x
  2. Step 2: Convert to fraction form
    663,738.04/916,047.78 = 422,044.60/x
  3. Step 3: Cross multiply
    663,738.04x = 916,047.78 × 422,044.60
  4. Step 4: Simplify right side
    663,738.04x = 386,613,018,890.99
  5. Step 5: Solve for x
    x = 386,613,018,890.99/663,738.04
  6. Step 6: Final answer
    x = 582,478.32

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Double scale
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1.5x scale

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.