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Finding the Fourth Proportional to 416,759.46, 621,478.79 and 412,970.28

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Solution

The fourth proportional to 416,759.46, 621,478.79 and 412,970.28 is: 615,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,759.46 : 621,478.79 = 412,970.28 : x
  2. Step 2: Convert to fraction form
    416,759.46/621,478.79 = 412,970.28/x
  3. Step 3: Cross multiply
    416,759.46x = 621,478.79 × 412,970.28
  4. Step 4: Simplify right side
    416,759.46x = 256,652,267,855.51
  5. Step 5: Solve for x
    x = 256,652,267,855.51/416,759.46
  6. Step 6: Final answer
    x = 615,828.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.