Home / 780,008.70-1,170,013.05-691,362.30

Finding the Fourth Proportional to 780,008.70, 1,170,013.05 and 691,362.30

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Solution

The fourth proportional to 780,008.70, 1,170,013.05 and 691,362.30 is: 1,037,043.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,008.70 : 1,170,013.05 = 691,362.30 : x
  2. Step 2: Convert to fraction form
    780,008.70/1,170,013.05 = 691,362.30/x
  3. Step 3: Cross multiply
    780,008.70x = 1,170,013.05 × 691,362.30
  4. Step 4: Simplify right side
    780,008.70x = 808,902,913,278.02
  5. Step 5: Solve for x
    x = 808,902,913,278.02/780,008.70
  6. Step 6: Final answer
    x = 1,037,043.45

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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.