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Finding the Fourth Proportional to 556,450.98, 767,919.74 and 314,728.83

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Solution

The fourth proportional to 556,450.98, 767,919.74 and 314,728.83 is: 434,335.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,450.98 : 767,919.74 = 314,728.83 : x
  2. Step 2: Convert to fraction form
    556,450.98/767,919.74 = 314,728.83/x
  3. Step 3: Cross multiply
    556,450.98x = 767,919.74 × 314,728.83
  4. Step 4: Simplify right side
    556,450.98x = 241,686,481,304.10
  5. Step 5: Solve for x
    x = 241,686,481,304.10/556,450.98
  6. Step 6: Final answer
    x = 434,335.62

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1.5x scale

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.