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Finding the Fourth Proportional to 1,103,571, 1,655,356.50 and 315,603

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Solution

The fourth proportional to 1,103,571, 1,655,356.50 and 315,603 is: 473,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,571 : 1,655,356.50 = 315,603 : x
  2. Step 2: Convert to fraction form
    1,103,571/1,655,356.50 = 315,603/x
  3. Step 3: Cross multiply
    1,103,571x = 1,655,356.50 × 315,603
  4. Step 4: Simplify right side
    1,103,571x = 522,435,477,469.50
  5. Step 5: Solve for x
    x = 522,435,477,469.50/1,103,571
  6. Step 6: Final answer
    x = 473,404.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.