Home / 1,288,532.18-1,779,064.08-805,314.54

Finding the Fourth Proportional to 1,288,532.18, 1,779,064.08 and 805,314.54

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Solution

The fourth proportional to 1,288,532.18, 1,779,064.08 and 805,314.54 is: 1,111,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,532.18 : 1,779,064.08 = 805,314.54 : x
  2. Step 2: Convert to fraction form
    1,288,532.18/1,779,064.08 = 805,314.54/x
  3. Step 3: Cross multiply
    1,288,532.18x = 1,779,064.08 × 805,314.54
  4. Step 4: Simplify right side
    1,288,532.18x = 1,432,706,171,215.72
  5. Step 5: Solve for x
    x = 1,432,706,171,215.72/1,288,532.18
  6. Step 6: Final answer
    x = 1,111,890.10

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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.