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Finding the Fourth Proportional to 538,915.80, 808,373.70 and 444,437.40

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Solution

The fourth proportional to 538,915.80, 808,373.70 and 444,437.40 is: 666,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,915.80 : 808,373.70 = 444,437.40 : x
  2. Step 2: Convert to fraction form
    538,915.80/808,373.70 = 444,437.40/x
  3. Step 3: Cross multiply
    538,915.80x = 808,373.70 × 444,437.40
  4. Step 4: Simplify right side
    538,915.80x = 359,271,505,456.38
  5. Step 5: Solve for x
    x = 359,271,505,456.38/538,915.80
  6. Step 6: Final answer
    x = 666,656.10

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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.