Home / 780,047.70-1,170,071.55-360,143.70

Finding the Fourth Proportional to 780,047.70, 1,170,071.55 and 360,143.70

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Solution

The fourth proportional to 780,047.70, 1,170,071.55 and 360,143.70 is: 540,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,047.70 : 1,170,071.55 = 360,143.70 : x
  2. Step 2: Convert to fraction form
    780,047.70/1,170,071.55 = 360,143.70/x
  3. Step 3: Cross multiply
    780,047.70x = 1,170,071.55 × 360,143.70
  4. Step 4: Simplify right side
    780,047.70x = 421,393,897,281.74
  5. Step 5: Solve for x
    x = 421,393,897,281.74/780,047.70
  6. Step 6: Final answer
    x = 540,215.55

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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.