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Finding the Fourth Proportional to 556,392.16, 767,859.28 and 314,674.80

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Solution

The fourth proportional to 556,392.16, 767,859.28 and 314,674.80 is: 434,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,392.16 : 767,859.28 = 314,674.80 : x
  2. Step 2: Convert to fraction form
    556,392.16/767,859.28 = 314,674.80/x
  3. Step 3: Cross multiply
    556,392.16x = 767,859.28 × 314,674.80
  4. Step 4: Simplify right side
    556,392.16x = 241,625,965,362.14
  5. Step 5: Solve for x
    x = 241,625,965,362.14/556,392.16
  6. Step 6: Final answer
    x = 434,272.77

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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.