Home / 567,012.57-781,400.73-405,587.35

Finding the Fourth Proportional to 567,012.57, 781,400.73 and 405,587.35

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Solution

The fourth proportional to 567,012.57, 781,400.73 and 405,587.35 is: 558,940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,012.57 : 781,400.73 = 405,587.35 : x
  2. Step 2: Convert to fraction form
    567,012.57/781,400.73 = 405,587.35/x
  3. Step 3: Cross multiply
    567,012.57x = 781,400.73 × 405,587.35
  4. Step 4: Simplify right side
    567,012.57x = 316,926,251,368.77
  5. Step 5: Solve for x
    x = 316,926,251,368.77/567,012.57
  6. Step 6: Final answer
    x = 558,940.43

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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.