Home / 831,845.60-1,247,998.80-551,909.60

Finding the Fourth Proportional to 831,845.60, 1,247,998.80 and 551,909.60

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Solution

The fourth proportional to 831,845.60, 1,247,998.80 and 551,909.60 is: 828,017.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,845.60 : 1,247,998.80 = 551,909.60 : x
  2. Step 2: Convert to fraction form
    831,845.60/1,247,998.80 = 551,909.60/x
  3. Step 3: Cross multiply
    831,845.60x = 1,247,998.80 × 551,909.60
  4. Step 4: Simplify right side
    831,845.60x = 688,782,518,508.48
  5. Step 5: Solve for x
    x = 688,782,518,508.48/831,845.60
  6. Step 6: Final answer
    x = 828,017.26

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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.