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Finding the Fourth Proportional to 526,323.75, 726,282.63 and 311,426.16

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Solution

The fourth proportional to 526,323.75, 726,282.63 and 311,426.16 is: 429,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,323.75 : 726,282.63 = 311,426.16 : x
  2. Step 2: Convert to fraction form
    526,323.75/726,282.63 = 311,426.16/x
  3. Step 3: Cross multiply
    526,323.75x = 726,282.63 × 311,426.16
  4. Step 4: Simplify right side
    526,323.75x = 226,183,410,535.60
  5. Step 5: Solve for x
    x = 226,183,410,535.60/526,323.75
  6. Step 6: Final answer
    x = 429,741.98

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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.