Home / 668,768.09-1,001,439.45-368,915.40

Finding the Fourth Proportional to 668,768.09, 1,001,439.45 and 368,915.40

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Solution

The fourth proportional to 668,768.09, 1,001,439.45 and 368,915.40 is: 552,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,768.09 : 1,001,439.45 = 368,915.40 : x
  2. Step 2: Convert to fraction form
    668,768.09/1,001,439.45 = 368,915.40/x
  3. Step 3: Cross multiply
    668,768.09x = 1,001,439.45 × 368,915.40
  4. Step 4: Simplify right side
    668,768.09x = 369,446,435,272.53
  5. Step 5: Solve for x
    x = 369,446,435,272.53/668,768.09
  6. Step 6: Final answer
    x = 552,428.33

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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.