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Finding the Fourth Proportional to 558,379.53, 770,700.65 and 316,803.51

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Solution

The fourth proportional to 558,379.53, 770,700.65 and 316,803.51 is: 437,266.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,379.53 : 770,700.65 = 316,803.51 : x
  2. Step 2: Convert to fraction form
    558,379.53/770,700.65 = 316,803.51/x
  3. Step 3: Cross multiply
    558,379.53x = 770,700.65 × 316,803.51
  4. Step 4: Simplify right side
    558,379.53x = 244,160,669,495.26
  5. Step 5: Solve for x
    x = 244,160,669,495.26/558,379.53
  6. Step 6: Final answer
    x = 437,266.51

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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.