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Finding the Fourth Proportional to 654,672.61, 903,312.73 and 382,687.91

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Solution

The fourth proportional to 654,672.61, 903,312.73 and 382,687.91 is: 528,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,672.61 : 903,312.73 = 382,687.91 : x
  2. Step 2: Convert to fraction form
    654,672.61/903,312.73 = 382,687.91/x
  3. Step 3: Cross multiply
    654,672.61x = 903,312.73 × 382,687.91
  4. Step 4: Simplify right side
    654,672.61x = 345,686,854,290.09
  5. Step 5: Solve for x
    x = 345,686,854,290.09/654,672.61
  6. Step 6: Final answer
    x = 528,030.12

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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.