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Finding the Fourth Proportional to 654,847.20, 903,150 and 386,316

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Solution

The fourth proportional to 654,847.20, 903,150 and 386,316 is: 532,798.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,847.20 : 903,150 = 386,316 : x
  2. Step 2: Convert to fraction form
    654,847.20/903,150 = 386,316/x
  3. Step 3: Cross multiply
    654,847.20x = 903,150 × 386,316
  4. Step 4: Simplify right side
    654,847.20x = 348,901,295,400
  5. Step 5: Solve for x
    x = 348,901,295,400/654,847.20
  6. Step 6: Final answer
    x = 532,798.03

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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.