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Finding the Fourth Proportional to 906,348.64, 1,358,728.08 and 345,009.76

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Solution

The fourth proportional to 906,348.64, 1,358,728.08 and 345,009.76 is: 517,212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,348.64 : 1,358,728.08 = 345,009.76 : x
  2. Step 2: Convert to fraction form
    906,348.64/1,358,728.08 = 345,009.76/x
  3. Step 3: Cross multiply
    906,348.64x = 1,358,728.08 × 345,009.76
  4. Step 4: Simplify right side
    906,348.64x = 468,774,448,786.06
  5. Step 5: Solve for x
    x = 468,774,448,786.06/906,348.64
  6. Step 6: Final answer
    x = 517,212.06

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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.