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Finding the Fourth Proportional to 526,312.69, 726,257.04 and 388,564.93

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Solution

The fourth proportional to 526,312.69, 726,257.04 and 388,564.93 is: 536,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,312.69 : 726,257.04 = 388,564.93 : x
  2. Step 2: Convert to fraction form
    526,312.69/726,257.04 = 388,564.93/x
  3. Step 3: Cross multiply
    526,312.69x = 726,257.04 × 388,564.93
  4. Step 4: Simplify right side
    526,312.69x = 282,198,015,360.31
  5. Step 5: Solve for x
    x = 282,198,015,360.31/526,312.69
  6. Step 6: Final answer
    x = 536,179.39

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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.