Home / 513,919.76-709,477.86-320,386.46

Finding the Fourth Proportional to 513,919.76, 709,477.86 and 320,386.46

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Solution

The fourth proportional to 513,919.76, 709,477.86 and 320,386.46 is: 442,300.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,919.76 : 709,477.86 = 320,386.46 : x
  2. Step 2: Convert to fraction form
    513,919.76/709,477.86 = 320,386.46/x
  3. Step 3: Cross multiply
    513,919.76x = 709,477.86 × 320,386.46
  4. Step 4: Simplify right side
    513,919.76x = 227,307,096,466.39
  5. Step 5: Solve for x
    x = 227,307,096,466.39/513,919.76
  6. Step 6: Final answer
    x = 442,300.76

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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.