Home / 747,316.36-1,031,286.90-407,778.76

Finding the Fourth Proportional to 747,316.36, 1,031,286.90 and 407,778.76

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Solution

The fourth proportional to 747,316.36, 1,031,286.90 and 407,778.76 is: 562,729.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,316.36 : 1,031,286.90 = 407,778.76 : x
  2. Step 2: Convert to fraction form
    747,316.36/1,031,286.90 = 407,778.76/x
  3. Step 3: Cross multiply
    747,316.36x = 1,031,286.90 × 407,778.76
  4. Step 4: Simplify right side
    747,316.36x = 420,536,893,286.24
  5. Step 5: Solve for x
    x = 420,536,893,286.24/747,316.36
  6. Step 6: Final answer
    x = 562,729.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.