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Finding the Fourth Proportional to 1,055,807.20, 1,583,710.80 and 994,981.60

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Solution

The fourth proportional to 1,055,807.20, 1,583,710.80 and 994,981.60 is: 1,492,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,807.20 : 1,583,710.80 = 994,981.60 : x
  2. Step 2: Convert to fraction form
    1,055,807.20/1,583,710.80 = 994,981.60/x
  3. Step 3: Cross multiply
    1,055,807.20x = 1,583,710.80 × 994,981.60
  4. Step 4: Simplify right side
    1,055,807.20x = 1,575,763,105,721.28
  5. Step 5: Solve for x
    x = 1,575,763,105,721.28/1,055,807.20
  6. Step 6: Final answer
    x = 1,492,472.40

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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.