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Finding the Fourth Proportional to 1,984,390.76, 2,976,602.55 and 636,564.53

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Solution

The fourth proportional to 1,984,390.76, 2,976,602.55 and 636,564.53 is: 954,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,390.76 : 2,976,602.55 = 636,564.53 : x
  2. Step 2: Convert to fraction form
    1,984,390.76/2,976,602.55 = 636,564.53/x
  3. Step 3: Cross multiply
    1,984,390.76x = 2,976,602.55 × 636,564.53
  4. Step 4: Simplify right side
    1,984,390.76x = 1,894,799,608,291.94
  5. Step 5: Solve for x
    x = 1,894,799,608,291.94/1,984,390.76
  6. Step 6: Final answer
    x = 954,852.06

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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.