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Finding the Fourth Proportional to 526,598.88, 726,599.04 and 311,631.36

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Solution

The fourth proportional to 526,598.88, 726,599.04 and 311,631.36 is: 429,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,598.88 : 726,599.04 = 311,631.36 : x
  2. Step 2: Convert to fraction form
    526,598.88/726,599.04 = 311,631.36/x
  3. Step 3: Cross multiply
    526,598.88x = 726,599.04 × 311,631.36
  4. Step 4: Simplify right side
    526,598.88x = 226,431,047,009.89
  5. Step 5: Solve for x
    x = 226,431,047,009.89/526,598.88
  6. Step 6: Final answer
    x = 429,987.71

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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.