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Finding the Fourth Proportional to 613,041.76, 845,870.84 and 358,343.68

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Solution

The fourth proportional to 613,041.76, 845,870.84 and 358,343.68 is: 494,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,041.76 : 845,870.84 = 358,343.68 : x
  2. Step 2: Convert to fraction form
    613,041.76/845,870.84 = 358,343.68/x
  3. Step 3: Cross multiply
    613,041.76x = 845,870.84 × 358,343.68
  4. Step 4: Simplify right side
    613,041.76x = 303,112,469,610.29
  5. Step 5: Solve for x
    x = 303,112,469,610.29/613,041.76
  6. Step 6: Final answer
    x = 494,440.17

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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.