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Finding the Fourth Proportional to 718,894.04, 992,077.07 and 396,604.01

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Solution

The fourth proportional to 718,894.04, 992,077.07 and 396,604.01 is: 547,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,894.04 : 992,077.07 = 396,604.01 : x
  2. Step 2: Convert to fraction form
    718,894.04/992,077.07 = 396,604.01/x
  3. Step 3: Cross multiply
    718,894.04x = 992,077.07 × 396,604.01
  4. Step 4: Simplify right side
    718,894.04x = 393,461,744,688.22
  5. Step 5: Solve for x
    x = 393,461,744,688.22/718,894.04
  6. Step 6: Final answer
    x = 547,315.36

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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.