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Finding the Fourth Proportional to 994,712.70, 1,492,069.05 and 859,410.30

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Solution

The fourth proportional to 994,712.70, 1,492,069.05 and 859,410.30 is: 1,289,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,712.70 : 1,492,069.05 = 859,410.30 : x
  2. Step 2: Convert to fraction form
    994,712.70/1,492,069.05 = 859,410.30/x
  3. Step 3: Cross multiply
    994,712.70x = 1,492,069.05 × 859,410.30
  4. Step 4: Simplify right side
    994,712.70x = 1,282,299,509,881.22
  5. Step 5: Solve for x
    x = 1,282,299,509,881.22/994,712.70
  6. Step 6: Final answer
    x = 1,289,115.45

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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.