Home / 786,047.40-1,178,855.10-217,293.48

Finding the Fourth Proportional to 786,047.40, 1,178,855.10 and 217,293.48

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Solution

The fourth proportional to 786,047.40, 1,178,855.10 and 217,293.48 is: 325,880.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,047.40 : 1,178,855.10 = 217,293.48 : x
  2. Step 2: Convert to fraction form
    786,047.40/1,178,855.10 = 217,293.48/x
  3. Step 3: Cross multiply
    786,047.40x = 1,178,855.10 × 217,293.48
  4. Step 4: Simplify right side
    786,047.40x = 256,157,527,094.75
  5. Step 5: Solve for x
    x = 256,157,527,094.75/786,047.40
  6. Step 6: Final answer
    x = 325,880.51

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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.