Home / 859,577.40-1,289,366.10-709,986.60

Finding the Fourth Proportional to 859,577.40, 1,289,366.10 and 709,986.60

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Solution

The fourth proportional to 859,577.40, 1,289,366.10 and 709,986.60 is: 1,064,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,577.40 : 1,289,366.10 = 709,986.60 : x
  2. Step 2: Convert to fraction form
    859,577.40/1,289,366.10 = 709,986.60/x
  3. Step 3: Cross multiply
    859,577.40x = 1,289,366.10 × 709,986.60
  4. Step 4: Simplify right side
    859,577.40x = 915,432,653,494.26
  5. Step 5: Solve for x
    x = 915,432,653,494.26/859,577.40
  6. Step 6: Final answer
    x = 1,064,979.90

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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.