Home / 1,008,705-1,392,012.90-556,005.72

Finding the Fourth Proportional to 1,008,705, 1,392,012.90 and 556,005.72

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Solution

The fourth proportional to 1,008,705, 1,392,012.90 and 556,005.72 is: 767,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,705 : 1,392,012.90 = 556,005.72 : x
  2. Step 2: Convert to fraction form
    1,008,705/1,392,012.90 = 556,005.72/x
  3. Step 3: Cross multiply
    1,008,705x = 1,392,012.90 × 556,005.72
  4. Step 4: Simplify right side
    1,008,705x = 773,967,134,713.79
  5. Step 5: Solve for x
    x = 773,967,134,713.79/1,008,705
  6. Step 6: Final answer
    x = 767,287.89

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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.