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Finding the Fourth Proportional to 556,776.72, 768,151.04 and 315,056.72

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Solution

The fourth proportional to 556,776.72, 768,151.04 and 315,056.72 is: 434,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,776.72 : 768,151.04 = 315,056.72 : x
  2. Step 2: Convert to fraction form
    556,776.72/768,151.04 = 315,056.72/x
  3. Step 3: Cross multiply
    556,776.72x = 768,151.04 × 315,056.72
  4. Step 4: Simplify right side
    556,776.72x = 242,011,147,126.99
  5. Step 5: Solve for x
    x = 242,011,147,126.99/556,776.72
  6. Step 6: Final answer
    x = 434,664.63

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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.