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Finding the Fourth Proportional to 634,538.81, 875,661.06 and 344,149.22

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Solution

The fourth proportional to 634,538.81, 875,661.06 and 344,149.22 is: 474,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,538.81 : 875,661.06 = 344,149.22 : x
  2. Step 2: Convert to fraction form
    634,538.81/875,661.06 = 344,149.22/x
  3. Step 3: Cross multiply
    634,538.81x = 875,661.06 × 344,149.22
  4. Step 4: Simplify right side
    634,538.81x = 301,358,074,263.09
  5. Step 5: Solve for x
    x = 301,358,074,263.09/634,538.81
  6. Step 6: Final answer
    x = 474,924.57

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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.