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Finding the Fourth Proportional to 480,494.88, 663,101.64 and 319,071.60

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Solution

The fourth proportional to 480,494.88, 663,101.64 and 319,071.60 is: 440,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,494.88 : 663,101.64 = 319,071.60 : x
  2. Step 2: Convert to fraction form
    480,494.88/663,101.64 = 319,071.60/x
  3. Step 3: Cross multiply
    480,494.88x = 663,101.64 × 319,071.60
  4. Step 4: Simplify right side
    480,494.88x = 211,576,901,237.42
  5. Step 5: Solve for x
    x = 211,576,901,237.42/480,494.88
  6. Step 6: Final answer
    x = 440,331.23

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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.