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Finding the Fourth Proportional to 555,054.06, 765,988.59 and 340,312.56

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Solution

The fourth proportional to 555,054.06, 765,988.59 and 340,312.56 is: 469,639.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,054.06 : 765,988.59 = 340,312.56 : x
  2. Step 2: Convert to fraction form
    555,054.06/765,988.59 = 340,312.56/x
  3. Step 3: Cross multiply
    555,054.06x = 765,988.59 × 340,312.56
  4. Step 4: Simplify right side
    555,054.06x = 260,675,537,993.69
  5. Step 5: Solve for x
    x = 260,675,537,993.69/555,054.06
  6. Step 6: Final answer
    x = 469,639.91

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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.