Home / 926,656.93-1,390,009.68-319,438.81

Finding the Fourth Proportional to 926,656.93, 1,390,009.68 and 319,438.81

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Solution

The fourth proportional to 926,656.93, 1,390,009.68 and 319,438.81 is: 479,166.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,656.93 : 1,390,009.68 = 319,438.81 : x
  2. Step 2: Convert to fraction form
    926,656.93/1,390,009.68 = 319,438.81/x
  3. Step 3: Cross multiply
    926,656.93x = 1,390,009.68 × 319,438.81
  4. Step 4: Simplify right side
    926,656.93x = 444,023,038,067.68
  5. Step 5: Solve for x
    x = 444,023,038,067.68/926,656.93
  6. Step 6: Final answer
    x = 479,166.59

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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.