Home / 1,234,768.40-1,851,115.80-643,792.40

Finding the Fourth Proportional to 1,234,768.40, 1,851,115.80 and 643,792.40

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Solution

The fourth proportional to 1,234,768.40, 1,851,115.80 and 643,792.40 is: 965,148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,768.40 : 1,851,115.80 = 643,792.40 : x
  2. Step 2: Convert to fraction form
    1,234,768.40/1,851,115.80 = 643,792.40/x
  3. Step 3: Cross multiply
    1,234,768.40x = 1,851,115.80 × 643,792.40
  4. Step 4: Simplify right side
    1,234,768.40x = 1,191,734,283,559.92
  5. Step 5: Solve for x
    x = 1,191,734,283,559.92/1,234,768.40
  6. Step 6: Final answer
    x = 965,148.03

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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.