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Finding the Fourth Proportional to 716,003.92, 988,064.52 and 393,713.68

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Solution

The fourth proportional to 716,003.92, 988,064.52 and 393,713.68 is: 543,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,003.92 : 988,064.52 = 393,713.68 : x
  2. Step 2: Convert to fraction form
    716,003.92/988,064.52 = 393,713.68/x
  3. Step 3: Cross multiply
    716,003.92x = 988,064.52 × 393,713.68
  4. Step 4: Simplify right side
    716,003.92x = 389,014,518,246.63
  5. Step 5: Solve for x
    x = 389,014,518,246.63/716,003.92
  6. Step 6: Final answer
    x = 543,313.39

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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.