Home / 1,240,817.85-1,712,291.34-689,531.69

Finding the Fourth Proportional to 1,240,817.85, 1,712,291.34 and 689,531.69

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Solution

The fourth proportional to 1,240,817.85, 1,712,291.34 and 689,531.69 is: 951,533.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,817.85 : 1,712,291.34 = 689,531.69 : x
  2. Step 2: Convert to fraction form
    1,240,817.85/1,712,291.34 = 689,531.69/x
  3. Step 3: Cross multiply
    1,240,817.85x = 1,712,291.34 × 689,531.69
  4. Step 4: Simplify right side
    1,240,817.85x = 1,180,679,141,442.56
  5. Step 5: Solve for x
    x = 1,180,679,141,442.56/1,240,817.85
  6. Step 6: Final answer
    x = 951,533.01

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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.