Home / 780,056.70-1,170,085.05-644,754.30

Finding the Fourth Proportional to 780,056.70, 1,170,085.05 and 644,754.30

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Solution

The fourth proportional to 780,056.70, 1,170,085.05 and 644,754.30 is: 967,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,056.70 : 1,170,085.05 = 644,754.30 : x
  2. Step 2: Convert to fraction form
    780,056.70/1,170,085.05 = 644,754.30/x
  3. Step 3: Cross multiply
    780,056.70x = 1,170,085.05 × 644,754.30
  4. Step 4: Simplify right side
    780,056.70x = 754,417,367,353.22
  5. Step 5: Solve for x
    x = 754,417,367,353.22/780,056.70
  6. Step 6: Final answer
    x = 967,131.45

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Double scale
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Similar ratio
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1.5x scale

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.