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Finding the Fourth Proportional to 560,987.40, 774,191.62 and 343,127.78

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Solution

The fourth proportional to 560,987.40, 774,191.62 and 343,127.78 is: 473,534.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,987.40 : 774,191.62 = 343,127.78 : x
  2. Step 2: Convert to fraction form
    560,987.40/774,191.62 = 343,127.78/x
  3. Step 3: Cross multiply
    560,987.40x = 774,191.62 × 343,127.78
  4. Step 4: Simplify right side
    560,987.40x = 265,646,651,865.20
  5. Step 5: Solve for x
    x = 265,646,651,865.20/560,987.40
  6. Step 6: Final answer
    x = 473,534.08

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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.