Home / 1,216,393.72-1,678,555.60-672,497.76

Finding the Fourth Proportional to 1,216,393.72, 1,678,555.60 and 672,497.76

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Solution

The fourth proportional to 1,216,393.72, 1,678,555.60 and 672,497.76 is: 928,009.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,393.72 : 1,678,555.60 = 672,497.76 : x
  2. Step 2: Convert to fraction form
    1,216,393.72/1,678,555.60 = 672,497.76/x
  3. Step 3: Cross multiply
    1,216,393.72x = 1,678,555.60 × 672,497.76
  4. Step 4: Simplify right side
    1,216,393.72x = 1,128,824,881,035.46
  5. Step 5: Solve for x
    x = 1,128,824,881,035.46/1,216,393.72
  6. Step 6: Final answer
    x = 928,009.46

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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.