Home / 778,076.56-1,074,054.90-668,748.16

Finding the Fourth Proportional to 778,076.56, 1,074,054.90 and 668,748.16

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Solution

The fourth proportional to 778,076.56, 1,074,054.90 and 668,748.16 is: 923,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,076.56 : 1,074,054.90 = 668,748.16 : x
  2. Step 2: Convert to fraction form
    778,076.56/1,074,054.90 = 668,748.16/x
  3. Step 3: Cross multiply
    778,076.56x = 1,074,054.90 × 668,748.16
  4. Step 4: Simplify right side
    778,076.56x = 718,272,238,113.98
  5. Step 5: Solve for x
    x = 718,272,238,113.98/778,076.56
  6. Step 6: Final answer
    x = 923,138.26

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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.