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Finding the Fourth Proportional to 578,051.40, 867,077.10 and 311,674.80

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Solution

The fourth proportional to 578,051.40, 867,077.10 and 311,674.80 is: 467,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,051.40 : 867,077.10 = 311,674.80 : x
  2. Step 2: Convert to fraction form
    578,051.40/867,077.10 = 311,674.80/x
  3. Step 3: Cross multiply
    578,051.40x = 867,077.10 × 311,674.80
  4. Step 4: Simplify right side
    578,051.40x = 270,246,081,727.08
  5. Step 5: Solve for x
    x = 270,246,081,727.08/578,051.40
  6. Step 6: Final answer
    x = 467,512.20

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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.