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Finding the Fourth Proportional to 3,977,807.40, 5,966,711.10 and 985,991.40

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Solution

The fourth proportional to 3,977,807.40, 5,966,711.10 and 985,991.40 is: 1,478,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977,807.40 : 5,966,711.10 = 985,991.40 : x
  2. Step 2: Convert to fraction form
    3,977,807.40/5,966,711.10 = 985,991.40/x
  3. Step 3: Cross multiply
    3,977,807.40x = 5,966,711.10 × 985,991.40
  4. Step 4: Simplify right side
    3,977,807.40x = 5,883,125,830,884.54
  5. Step 5: Solve for x
    x = 5,883,125,830,884.54/3,977,807.40
  6. Step 6: Final answer
    x = 1,478,987.10

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Similar ratio
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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.