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Finding the Fourth Proportional to 886,651.60, 1,329,852.70 and 287,618.02

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Solution

The fourth proportional to 886,651.60, 1,329,852.70 and 287,618.02 is: 431,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,651.60 : 1,329,852.70 = 287,618.02 : x
  2. Step 2: Convert to fraction form
    886,651.60/1,329,852.70 = 287,618.02/x
  3. Step 3: Cross multiply
    886,651.60x = 1,329,852.70 × 287,618.02
  4. Step 4: Simplify right side
    886,651.60x = 382,489,596,421.98
  5. Step 5: Solve for x
    x = 382,489,596,421.98/886,651.60
  6. Step 6: Final answer
    x = 431,386.58

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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.