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Finding the Fourth Proportional to 901,807, 1,244,532.80 and 499,399

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Solution

The fourth proportional to 901,807, 1,244,532.80 and 499,399 is: 689,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,807 : 1,244,532.80 = 499,399 : x
  2. Step 2: Convert to fraction form
    901,807/1,244,532.80 = 499,399/x
  3. Step 3: Cross multiply
    901,807x = 1,244,532.80 × 499,399
  4. Step 4: Simplify right side
    901,807x = 621,518,435,787.20
  5. Step 5: Solve for x
    x = 621,518,435,787.20/901,807
  6. Step 6: Final answer
    x = 689,192.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.