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Finding the Fourth Proportional to 553,011.57, 828,188.55 and 315,634.59

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Solution

The fourth proportional to 553,011.57, 828,188.55 and 315,634.59 is: 472,693.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,011.57 : 828,188.55 = 315,634.59 : x
  2. Step 2: Convert to fraction form
    553,011.57/828,188.55 = 315,634.59/x
  3. Step 3: Cross multiply
    553,011.57x = 828,188.55 × 315,634.59
  4. Step 4: Simplify right side
    553,011.57x = 261,404,953,421.95
  5. Step 5: Solve for x
    x = 261,404,953,421.95/553,011.57
  6. Step 6: Final answer
    x = 472,693.46

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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.