Home / 555,476.18-766,619.48-313,774.32

Finding the Fourth Proportional to 555,476.18, 766,619.48 and 313,774.32

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Solution

The fourth proportional to 555,476.18, 766,619.48 and 313,774.32 is: 433,043.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,476.18 : 766,619.48 = 313,774.32 : x
  2. Step 2: Convert to fraction form
    555,476.18/766,619.48 = 313,774.32/x
  3. Step 3: Cross multiply
    555,476.18x = 766,619.48 × 313,774.32
  4. Step 4: Simplify right side
    555,476.18x = 240,545,506,035.75
  5. Step 5: Solve for x
    x = 240,545,506,035.75/555,476.18
  6. Step 6: Final answer
    x = 433,043.78

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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.