Home / 691,129.60-1,036,694.40-651,763.60

Finding the Fourth Proportional to 691,129.60, 1,036,694.40 and 651,763.60

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Solution

The fourth proportional to 691,129.60, 1,036,694.40 and 651,763.60 is: 977,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,129.60 : 1,036,694.40 = 651,763.60 : x
  2. Step 2: Convert to fraction form
    691,129.60/1,036,694.40 = 651,763.60/x
  3. Step 3: Cross multiply
    691,129.60x = 1,036,694.40 × 651,763.60
  4. Step 4: Simplify right side
    691,129.60x = 675,679,674,243.84
  5. Step 5: Solve for x
    x = 675,679,674,243.84/691,129.60
  6. Step 6: Final answer
    x = 977,645.40

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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.