Home / 817,878.38-1,226,929.35-285,319.58

Finding the Fourth Proportional to 817,878.38, 1,226,929.35 and 285,319.58

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Solution

The fourth proportional to 817,878.38, 1,226,929.35 and 285,319.58 is: 428,018.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,878.38 : 1,226,929.35 = 285,319.58 : x
  2. Step 2: Convert to fraction form
    817,878.38/1,226,929.35 = 285,319.58/x
  3. Step 3: Cross multiply
    817,878.38x = 1,226,929.35 × 285,319.58
  4. Step 4: Simplify right side
    817,878.38x = 350,066,960,697.03
  5. Step 5: Solve for x
    x = 350,066,960,697.03/817,878.38
  6. Step 6: Final answer
    x = 428,018.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.