Home / 1,216,387.80-1,678,547.34-672,491.88

Finding the Fourth Proportional to 1,216,387.80, 1,678,547.34 and 672,491.88

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Solution

The fourth proportional to 1,216,387.80, 1,678,547.34 and 672,491.88 is: 928,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,387.80 : 1,678,547.34 = 672,491.88 : x
  2. Step 2: Convert to fraction form
    1,216,387.80/1,678,547.34 = 672,491.88/x
  3. Step 3: Cross multiply
    1,216,387.80x = 1,678,547.34 × 672,491.88
  4. Step 4: Simplify right side
    1,216,387.80x = 1,128,809,456,345.60
  5. Step 5: Solve for x
    x = 1,128,809,456,345.60/1,216,387.80
  6. Step 6: Final answer
    x = 928,001.30

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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.