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Finding the Fourth Proportional to 662,357.20, 993,973.20 and 378,047.20

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Solution

The fourth proportional to 662,357.20, 993,973.20 and 378,047.20 is: 567,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,357.20 : 993,973.20 = 378,047.20 : x
  2. Step 2: Convert to fraction form
    662,357.20/993,973.20 = 378,047.20/x
  3. Step 3: Cross multiply
    662,357.20x = 993,973.20 × 378,047.20
  4. Step 4: Simplify right side
    662,357.20x = 375,768,785,135.04
  5. Step 5: Solve for x
    x = 375,768,785,135.04/662,357.20
  6. Step 6: Final answer
    x = 567,320.45

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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.