Home / 1,383,612.80-1,909,095.36-840,034.76

Finding the Fourth Proportional to 1,383,612.80, 1,909,095.36 and 840,034.76

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Solution

The fourth proportional to 1,383,612.80, 1,909,095.36 and 840,034.76 is: 1,159,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,612.80 : 1,909,095.36 = 840,034.76 : x
  2. Step 2: Convert to fraction form
    1,383,612.80/1,909,095.36 = 840,034.76/x
  3. Step 3: Cross multiply
    1,383,612.80x = 1,909,095.36 × 840,034.76
  4. Step 4: Simplify right side
    1,383,612.80x = 1,603,706,462,554.71
  5. Step 5: Solve for x
    x = 1,603,706,462,554.71/1,383,612.80
  6. Step 6: Final answer
    x = 1,159,071.72

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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.