Home / 1,216,374.27-1,678,528.71-672,478.30

Finding the Fourth Proportional to 1,216,374.27, 1,678,528.71 and 672,478.30

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Solution

The fourth proportional to 1,216,374.27, 1,678,528.71 and 672,478.30 is: 927,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,374.27 : 1,678,528.71 = 672,478.30 : x
  2. Step 2: Convert to fraction form
    1,216,374.27/1,678,528.71 = 672,478.30/x
  3. Step 3: Cross multiply
    1,216,374.27x = 1,678,528.71 × 672,478.30
  4. Step 4: Simplify right side
    1,216,374.27x = 1,128,774,135,500.15
  5. Step 5: Solve for x
    x = 1,128,774,135,500.15/1,216,374.27
  6. Step 6: Final answer
    x = 927,982.58

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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.