Home / 1,387,705.64-1,915,106.90-843,751.35

Finding the Fourth Proportional to 1,387,705.64, 1,915,106.90 and 843,751.35

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Solution

The fourth proportional to 1,387,705.64, 1,915,106.90 and 843,751.35 is: 1,164,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,705.64 : 1,915,106.90 = 843,751.35 : x
  2. Step 2: Convert to fraction form
    1,387,705.64/1,915,106.90 = 843,751.35/x
  3. Step 3: Cross multiply
    1,387,705.64x = 1,915,106.90 × 843,751.35
  4. Step 4: Simplify right side
    1,387,705.64x = 1,615,874,028,050.56
  5. Step 5: Solve for x
    x = 1,615,874,028,050.56/1,387,705.64
  6. Step 6: Final answer
    x = 1,164,421.32

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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.