Home / 1,215,885.02-1,678,008.15-672,009.12

Finding the Fourth Proportional to 1,215,885.02, 1,678,008.15 and 672,009.12

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Solution

The fourth proportional to 1,215,885.02, 1,678,008.15 and 672,009.12 is: 927,420.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,885.02 : 1,678,008.15 = 672,009.12 : x
  2. Step 2: Convert to fraction form
    1,215,885.02/1,678,008.15 = 672,009.12/x
  3. Step 3: Cross multiply
    1,215,885.02x = 1,678,008.15 × 672,009.12
  4. Step 4: Simplify right side
    1,215,885.02x = 1,127,636,780,234.33
  5. Step 5: Solve for x
    x = 1,127,636,780,234.33/1,215,885.02
  6. Step 6: Final answer
    x = 927,420.58

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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.