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Finding the Fourth Proportional to 554,823.09, 765,655.61 and 313,156.35

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Solution

The fourth proportional to 554,823.09, 765,655.61 and 313,156.35 is: 432,155.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,823.09 : 765,655.61 = 313,156.35 : x
  2. Step 2: Convert to fraction form
    554,823.09/765,655.61 = 313,156.35/x
  3. Step 3: Cross multiply
    554,823.09x = 765,655.61 × 313,156.35
  4. Step 4: Simplify right side
    554,823.09x = 239,769,914,618.84
  5. Step 5: Solve for x
    x = 239,769,914,618.84/554,823.09
  6. Step 6: Final answer
    x = 432,155.62

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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.