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Finding the Fourth Proportional to 552,783.93, 762,839.40 and 311,070.54

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Solution

The fourth proportional to 552,783.93, 762,839.40 and 311,070.54 is: 429,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,783.93 : 762,839.40 = 311,070.54 : x
  2. Step 2: Convert to fraction form
    552,783.93/762,839.40 = 311,070.54/x
  3. Step 3: Cross multiply
    552,783.93x = 762,839.40 × 311,070.54
  4. Step 4: Simplify right side
    552,783.93x = 237,296,864,091.28
  5. Step 5: Solve for x
    x = 237,296,864,091.28/552,783.93
  6. Step 6: Final answer
    x = 429,275.98

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1.5x scale

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.