Home / 1,215,881.20-1,678,002.93-672,005.28

Finding the Fourth Proportional to 1,215,881.20, 1,678,002.93 and 672,005.28

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Solution

The fourth proportional to 1,215,881.20, 1,678,002.93 and 672,005.28 is: 927,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,881.20 : 1,678,002.93 = 672,005.28 : x
  2. Step 2: Convert to fraction form
    1,215,881.20/1,678,002.93 = 672,005.28/x
  3. Step 3: Cross multiply
    1,215,881.20x = 1,678,002.93 × 672,005.28
  4. Step 4: Simplify right side
    1,215,881.20x = 1,127,626,828,815.47
  5. Step 5: Solve for x
    x = 1,127,626,828,815.47/1,215,881.20
  6. Step 6: Final answer
    x = 927,415.30

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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.