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Finding the Fourth Proportional to 526,390.80, 726,411.96 and 300,040.08

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Solution

The fourth proportional to 526,390.80, 726,411.96 and 300,040.08 is: 414,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,390.80 : 726,411.96 = 300,040.08 : x
  2. Step 2: Convert to fraction form
    526,390.80/726,411.96 = 300,040.08/x
  3. Step 3: Cross multiply
    526,390.80x = 726,411.96 × 300,040.08
  4. Step 4: Simplify right side
    526,390.80x = 217,952,702,591.36
  5. Step 5: Solve for x
    x = 217,952,702,591.36/526,390.80
  6. Step 6: Final answer
    x = 414,051.12

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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.