Home / 728,875.81-1,005,855.17-402,203.35

Finding the Fourth Proportional to 728,875.81, 1,005,855.17 and 402,203.35

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Solution

The fourth proportional to 728,875.81, 1,005,855.17 and 402,203.35 is: 555,044.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,875.81 : 1,005,855.17 = 402,203.35 : x
  2. Step 2: Convert to fraction form
    728,875.81/1,005,855.17 = 402,203.35/x
  3. Step 3: Cross multiply
    728,875.81x = 1,005,855.17 × 402,203.35
  4. Step 4: Simplify right side
    728,875.81x = 404,558,318,988.82
  5. Step 5: Solve for x
    x = 404,558,318,988.82/728,875.81
  6. Step 6: Final answer
    x = 555,044.24

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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.