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Finding the Fourth Proportional to 556,203, 767,663.82 and 317,739

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Solution

The fourth proportional to 556,203, 767,663.82 and 317,739 is: 438,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,203 : 767,663.82 = 317,739 : x
  2. Step 2: Convert to fraction form
    556,203/767,663.82 = 317,739/x
  3. Step 3: Cross multiply
    556,203x = 767,663.82 × 317,739
  4. Step 4: Simplify right side
    556,203x = 243,916,734,502.98
  5. Step 5: Solve for x
    x = 243,916,734,502.98/556,203
  6. Step 6: Final answer
    x = 438,539.05

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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.