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Finding the Fourth Proportional to 1,948,674.30, 2,920,824.45 and 938,280.30

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Solution

The fourth proportional to 1,948,674.30, 2,920,824.45 and 938,280.30 is: 1,406,367.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948,674.30 : 2,920,824.45 = 938,280.30 : x
  2. Step 2: Convert to fraction form
    1,948,674.30/2,920,824.45 = 938,280.30/x
  3. Step 3: Cross multiply
    1,948,674.30x = 2,920,824.45 × 938,280.30
  4. Step 4: Simplify right side
    1,948,674.30x = 2,740,552,041,193.34
  5. Step 5: Solve for x
    x = 2,740,552,041,193.34/1,948,674.30
  6. Step 6: Final answer
    x = 1,406,367.42

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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.