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Finding the Fourth Proportional to 523,618.40, 785,539.20 and 299,086.40

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Solution

The fourth proportional to 523,618.40, 785,539.20 and 299,086.40 is: 448,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,618.40 : 785,539.20 = 299,086.40 : x
  2. Step 2: Convert to fraction form
    523,618.40/785,539.20 = 299,086.40/x
  3. Step 3: Cross multiply
    523,618.40x = 785,539.20 × 299,086.40
  4. Step 4: Simplify right side
    523,618.40x = 234,944,091,386.88
  5. Step 5: Solve for x
    x = 234,944,091,386.88/523,618.40
  6. Step 6: Final answer
    x = 448,693.34

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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.