Home / 831,009.36-1,246,070.88-431,247.60

Finding the Fourth Proportional to 831,009.36, 1,246,070.88 and 431,247.60

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Solution

The fourth proportional to 831,009.36, 1,246,070.88 and 431,247.60 is: 646,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,009.36 : 1,246,070.88 = 431,247.60 : x
  2. Step 2: Convert to fraction form
    831,009.36/1,246,070.88 = 431,247.60/x
  3. Step 3: Cross multiply
    831,009.36x = 1,246,070.88 × 431,247.60
  4. Step 4: Simplify right side
    831,009.36x = 537,365,076,429.89
  5. Step 5: Solve for x
    x = 537,365,076,429.89/831,009.36
  6. Step 6: Final answer
    x = 646,641.42

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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.