Home / 921,870.15-1,382,968.75-282,159.73

Finding the Fourth Proportional to 921,870.15, 1,382,968.75 and 282,159.73

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Solution

The fourth proportional to 921,870.15, 1,382,968.75 and 282,159.73 is: 423,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,870.15 : 1,382,968.75 = 282,159.73 : x
  2. Step 2: Convert to fraction form
    921,870.15/1,382,968.75 = 282,159.73/x
  3. Step 3: Cross multiply
    921,870.15x = 1,382,968.75 × 282,159.73
  4. Step 4: Simplify right side
    921,870.15x = 390,218,089,098.44
  5. Step 5: Solve for x
    x = 390,218,089,098.44/921,870.15
  6. Step 6: Final answer
    x = 423,289.65

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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.