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Finding the Fourth Proportional to 556,393.16, 767,860.66 and 314,675.80

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Solution

The fourth proportional to 556,393.16, 767,860.66 and 314,675.80 is: 434,274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,393.16 : 767,860.66 = 314,675.80 : x
  2. Step 2: Convert to fraction form
    556,393.16/767,860.66 = 314,675.80/x
  3. Step 3: Cross multiply
    556,393.16x = 767,860.66 × 314,675.80
  4. Step 4: Simplify right side
    556,393.16x = 241,627,167,474.03
  5. Step 5: Solve for x
    x = 241,627,167,474.03/556,393.16
  6. Step 6: Final answer
    x = 434,274.15

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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.