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Finding the Fourth Proportional to 1,294,802.60, 1,942,787.10 and 620,623.40

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Solution

The fourth proportional to 1,294,802.60, 1,942,787.10 and 620,623.40 is: 931,214.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,802.60 : 1,942,787.10 = 620,623.40 : x
  2. Step 2: Convert to fraction form
    1,294,802.60/1,942,787.10 = 620,623.40/x
  3. Step 3: Cross multiply
    1,294,802.60x = 1,942,787.10 × 620,623.40
  4. Step 4: Simplify right side
    1,294,802.60x = 1,205,739,135,478.14
  5. Step 5: Solve for x
    x = 1,205,739,135,478.14/1,294,802.60
  6. Step 6: Final answer
    x = 931,214.64

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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.