Home / 641,956.49-885,926.65-355,476.57

Finding the Fourth Proportional to 641,956.49, 885,926.65 and 355,476.57

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Solution

The fourth proportional to 641,956.49, 885,926.65 and 355,476.57 is: 490,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,956.49 : 885,926.65 = 355,476.57 : x
  2. Step 2: Convert to fraction form
    641,956.49/885,926.65 = 355,476.57/x
  3. Step 3: Cross multiply
    641,956.49x = 885,926.65 × 355,476.57
  4. Step 4: Simplify right side
    641,956.49x = 314,926,163,269.19
  5. Step 5: Solve for x
    x = 314,926,163,269.19/641,956.49
  6. Step 6: Final answer
    x = 490,572.44

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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.