Home / 854,317.20-1,281,341.28-285,693.92

Finding the Fourth Proportional to 854,317.20, 1,281,341.28 and 285,693.92

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Solution

The fourth proportional to 854,317.20, 1,281,341.28 and 285,693.92 is: 428,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,317.20 : 1,281,341.28 = 285,693.92 : x
  2. Step 2: Convert to fraction form
    854,317.20/1,281,341.28 = 285,693.92/x
  3. Step 3: Cross multiply
    854,317.20x = 1,281,341.28 × 285,693.92
  4. Step 4: Simplify right side
    854,317.20x = 366,071,413,141.02
  5. Step 5: Solve for x
    x = 366,071,413,141.02/854,317.20
  6. Step 6: Final answer
    x = 428,495.89

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1.5x scale

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.