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Finding the Fourth Proportional to 1,314,946.40, 1,972,419.60 and 801,220.10

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Solution

The fourth proportional to 1,314,946.40, 1,972,419.60 and 801,220.10 is: 1,201,830.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,946.40 : 1,972,419.60 = 801,220.10 : x
  2. Step 2: Convert to fraction form
    1,314,946.40/1,972,419.60 = 801,220.10/x
  3. Step 3: Cross multiply
    1,314,946.40x = 1,972,419.60 × 801,220.10
  4. Step 4: Simplify right side
    1,314,946.40x = 1,580,342,229,153.96
  5. Step 5: Solve for x
    x = 1,580,342,229,153.96/1,314,946.40
  6. Step 6: Final answer
    x = 1,201,830.15

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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.