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Finding the Fourth Proportional to 647,477.20, 970,924.20 and 247,985.20

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Solution

The fourth proportional to 647,477.20, 970,924.20 and 247,985.20 is: 371,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,477.20 : 970,924.20 = 247,985.20 : x
  2. Step 2: Convert to fraction form
    647,477.20/970,924.20 = 247,985.20/x
  3. Step 3: Cross multiply
    647,477.20x = 970,924.20 × 247,985.20
  4. Step 4: Simplify right side
    647,477.20x = 240,774,831,921.84
  5. Step 5: Solve for x
    x = 240,774,831,921.84/647,477.20
  6. Step 6: Final answer
    x = 371,866.12

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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.