Home / 663,738.54-916,048.47-422,045.10

Finding the Fourth Proportional to 663,738.54, 916,048.47 and 422,045.10

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Solution

The fourth proportional to 663,738.54, 916,048.47 and 422,045.10 is: 582,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,738.54 : 916,048.47 = 422,045.10 : x
  2. Step 2: Convert to fraction form
    663,738.54/916,048.47 = 422,045.10/x
  3. Step 3: Cross multiply
    663,738.54x = 916,048.47 × 422,045.10
  4. Step 4: Simplify right side
    663,738.54x = 386,613,768,126.00
  5. Step 5: Solve for x
    x = 386,613,768,126.00/663,738.54
  6. Step 6: Final answer
    x = 582,479.01

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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.