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Finding the Fourth Proportional to 634,472.94, 875,604.78 and 348,019.74

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Solution

The fourth proportional to 634,472.94, 875,604.78 and 348,019.74 is: 480,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,472.94 : 875,604.78 = 348,019.74 : x
  2. Step 2: Convert to fraction form
    634,472.94/875,604.78 = 348,019.74/x
  3. Step 3: Cross multiply
    634,472.94x = 875,604.78 × 348,019.74
  4. Step 4: Simplify right side
    634,472.94x = 304,727,747,878.36
  5. Step 5: Solve for x
    x = 304,727,747,878.36/634,472.94
  6. Step 6: Final answer
    x = 480,284.86

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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.