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Finding the Fourth Proportional to 634,519.67, 875,678.83 and 348,039.79

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Solution

The fourth proportional to 634,519.67, 875,678.83 and 348,039.79 is: 480,317.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,519.67 : 875,678.83 = 348,039.79 : x
  2. Step 2: Convert to fraction form
    634,519.67/875,678.83 = 348,039.79/x
  3. Step 3: Cross multiply
    634,519.67x = 875,678.83 × 348,039.79
  4. Step 4: Simplify right side
    634,519.67x = 304,771,073,041.35
  5. Step 5: Solve for x
    x = 304,771,073,041.35/634,519.67
  6. Step 6: Final answer
    x = 480,317.77

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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.