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Finding the Fourth Proportional to 907,674.60, 1,361,511.90 and 820,583.40

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Solution

The fourth proportional to 907,674.60, 1,361,511.90 and 820,583.40 is: 1,230,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,674.60 : 1,361,511.90 = 820,583.40 : x
  2. Step 2: Convert to fraction form
    907,674.60/1,361,511.90 = 820,583.40/x
  3. Step 3: Cross multiply
    907,674.60x = 1,361,511.90 × 820,583.40
  4. Step 4: Simplify right side
    907,674.60x = 1,117,234,064,042.46
  5. Step 5: Solve for x
    x = 1,117,234,064,042.46/907,674.60
  6. Step 6: Final answer
    x = 1,230,875.10

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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.