Home / 831,803.76-1,147,880.39-469,345.57

Finding the Fourth Proportional to 831,803.76, 1,147,880.39 and 469,345.57

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Solution

The fourth proportional to 831,803.76, 1,147,880.39 and 469,345.57 is: 647,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,803.76 : 1,147,880.39 = 469,345.57 : x
  2. Step 2: Convert to fraction form
    831,803.76/1,147,880.39 = 469,345.57/x
  3. Step 3: Cross multiply
    831,803.76x = 1,147,880.39 × 469,345.57
  4. Step 4: Simplify right side
    831,803.76x = 538,752,575,936.37
  5. Step 5: Solve for x
    x = 538,752,575,936.37/831,803.76
  6. Step 6: Final answer
    x = 647,691.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.