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Finding the Fourth Proportional to 607,745.80, 912,201.90 and 308,564.20

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Solution

The fourth proportional to 607,745.80, 912,201.90 and 308,564.20 is: 463,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,745.80 : 912,201.90 = 308,564.20 : x
  2. Step 2: Convert to fraction form
    607,745.80/912,201.90 = 308,564.20/x
  3. Step 3: Cross multiply
    607,745.80x = 912,201.90 × 308,564.20
  4. Step 4: Simplify right side
    607,745.80x = 281,472,849,511.98
  5. Step 5: Solve for x
    x = 281,472,849,511.98/607,745.80
  6. Step 6: Final answer
    x = 463,142.40

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1.5x scale

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.