Home / 1,287,638.08-1,776,927.72-714,663.52

Finding the Fourth Proportional to 1,287,638.08, 1,776,927.72 and 714,663.52

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Solution

The fourth proportional to 1,287,638.08, 1,776,927.72 and 714,663.52 is: 986,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,638.08 : 1,776,927.72 = 714,663.52 : x
  2. Step 2: Convert to fraction form
    1,287,638.08/1,776,927.72 = 714,663.52/x
  3. Step 3: Cross multiply
    1,287,638.08x = 1,776,927.72 × 714,663.52
  4. Step 4: Simplify right side
    1,287,638.08x = 1,269,905,419,160.77
  5. Step 5: Solve for x
    x = 1,269,905,419,160.77/1,287,638.08
  6. Step 6: Final answer
    x = 986,228.54

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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.