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Finding the Fourth Proportional to 980,920.80, 1,470,603.60 and 537,688.80

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Solution

The fourth proportional to 980,920.80, 1,470,603.60 and 537,688.80 is: 806,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,920.80 : 1,470,603.60 = 537,688.80 : x
  2. Step 2: Convert to fraction form
    980,920.80/1,470,603.60 = 537,688.80/x
  3. Step 3: Cross multiply
    980,920.80x = 1,470,603.60 × 537,688.80
  4. Step 4: Simplify right side
    980,920.80x = 790,727,084,959.68
  5. Step 5: Solve for x
    x = 790,727,084,959.68/980,920.80
  6. Step 6: Final answer
    x = 806,106.96

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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.