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Finding the Fourth Proportional to 511,312.02, 705,468.87 and 330,031.59

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Solution

The fourth proportional to 511,312.02, 705,468.87 and 330,031.59 is: 455,352.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,312.02 : 705,468.87 = 330,031.59 : x
  2. Step 2: Convert to fraction form
    511,312.02/705,468.87 = 330,031.59/x
  3. Step 3: Cross multiply
    511,312.02x = 705,468.87 × 330,031.59
  4. Step 4: Simplify right side
    511,312.02x = 232,827,012,861.60
  5. Step 5: Solve for x
    x = 232,827,012,861.60/511,312.02
  6. Step 6: Final answer
    x = 455,352.12

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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.