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Finding the Fourth Proportional to 555,477.18, 766,620.86 and 313,775.32

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Solution

The fourth proportional to 555,477.18, 766,620.86 and 313,775.32 is: 433,045.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,477.18 : 766,620.86 = 313,775.32 : x
  2. Step 2: Convert to fraction form
    555,477.18/766,620.86 = 313,775.32/x
  3. Step 3: Cross multiply
    555,477.18x = 766,620.86 × 313,775.32
  4. Step 4: Simplify right side
    555,477.18x = 240,546,705,665.18
  5. Step 5: Solve for x
    x = 240,546,705,665.18/555,477.18
  6. Step 6: Final answer
    x = 433,045.16

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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.