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Finding the Fourth Proportional to 491,686.80, 736,558.20 and 433,237.20

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Solution

The fourth proportional to 491,686.80, 736,558.20 and 433,237.20 is: 648,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,686.80 : 736,558.20 = 433,237.20 : x
  2. Step 2: Convert to fraction form
    491,686.80/736,558.20 = 433,237.20/x
  3. Step 3: Cross multiply
    491,686.80x = 736,558.20 × 433,237.20
  4. Step 4: Simplify right side
    491,686.80x = 319,104,412,205.04
  5. Step 5: Solve for x
    x = 319,104,412,205.04/491,686.80
  6. Step 6: Final answer
    x = 648,999.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.