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Finding the Fourth Proportional to 1,078,584.74, 1,488,985.82 and 670,818.03

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Solution

The fourth proportional to 1,078,584.74, 1,488,985.82 and 670,818.03 is: 926,064.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,584.74 : 1,488,985.82 = 670,818.03 : x
  2. Step 2: Convert to fraction form
    1,078,584.74/1,488,985.82 = 670,818.03/x
  3. Step 3: Cross multiply
    1,078,584.74x = 1,488,985.82 × 670,818.03
  4. Step 4: Simplify right side
    1,078,584.74x = 998,838,528,048.12
  5. Step 5: Solve for x
    x = 998,838,528,048.12/1,078,584.74
  6. Step 6: Final answer
    x = 926,064.03

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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.