Home / 1,252,779.23-1,728,840.05-679,819.45

Finding the Fourth Proportional to 1,252,779.23, 1,728,840.05 and 679,819.45

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Solution

The fourth proportional to 1,252,779.23, 1,728,840.05 and 679,819.45 is: 938,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,779.23 : 1,728,840.05 = 679,819.45 : x
  2. Step 2: Convert to fraction form
    1,252,779.23/1,728,840.05 = 679,819.45/x
  3. Step 3: Cross multiply
    1,252,779.23x = 1,728,840.05 × 679,819.45
  4. Step 4: Simplify right side
    1,252,779.23x = 1,175,299,091,928.97
  5. Step 5: Solve for x
    x = 1,175,299,091,928.97/1,252,779.23
  6. Step 6: Final answer
    x = 938,153.40

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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.