Home / 672,981.51-928,691.82-400,908.50

Finding the Fourth Proportional to 672,981.51, 928,691.82 and 400,908.50

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Solution

The fourth proportional to 672,981.51, 928,691.82 and 400,908.50 is: 553,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,981.51 : 928,691.82 = 400,908.50 : x
  2. Step 2: Convert to fraction form
    672,981.51/928,691.82 = 400,908.50/x
  3. Step 3: Cross multiply
    672,981.51x = 928,691.82 × 400,908.50
  4. Step 4: Simplify right side
    672,981.51x = 372,320,439,875.01
  5. Step 5: Solve for x
    x = 372,320,439,875.01/672,981.51
  6. Step 6: Final answer
    x = 553,240.22

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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.