Home / 831,630.60-1,247,154.30-432,138.60

Finding the Fourth Proportional to 831,630.60, 1,247,154.30 and 432,138.60

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Solution

The fourth proportional to 831,630.60, 1,247,154.30 and 432,138.60 is: 648,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,630.60 : 1,247,154.30 = 432,138.60 : x
  2. Step 2: Convert to fraction form
    831,630.60/1,247,154.30 = 432,138.60/x
  3. Step 3: Cross multiply
    831,630.60x = 1,247,154.30 × 432,138.60
  4. Step 4: Simplify right side
    831,630.60x = 538,943,513,185.98
  5. Step 5: Solve for x
    x = 538,943,513,185.98/831,630.60
  6. Step 6: Final answer
    x = 648,056.38

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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.