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Finding the Fourth Proportional to 556,387.03, 767,805.04 and 314,660.56

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Solution

The fourth proportional to 556,387.03, 767,805.04 and 314,660.56 is: 434,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,387.03 : 767,805.04 = 314,660.56 : x
  2. Step 2: Convert to fraction form
    556,387.03/767,805.04 = 314,660.56/x
  3. Step 3: Cross multiply
    556,387.03x = 767,805.04 × 314,660.56
  4. Step 4: Simplify right side
    556,387.03x = 241,597,963,857.22
  5. Step 5: Solve for x
    x = 241,597,963,857.22/556,387.03
  6. Step 6: Final answer
    x = 434,226.45

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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.