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Finding the Fourth Proportional to 552,210.40, 828,315.60 and 485,725.60

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Solution

The fourth proportional to 552,210.40, 828,315.60 and 485,725.60 is: 728,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,210.40 : 828,315.60 = 485,725.60 : x
  2. Step 2: Convert to fraction form
    552,210.40/828,315.60 = 485,725.60/x
  3. Step 3: Cross multiply
    552,210.40x = 828,315.60 × 485,725.60
  4. Step 4: Simplify right side
    552,210.40x = 402,334,091,799.36
  5. Step 5: Solve for x
    x = 402,334,091,799.36/552,210.40
  6. Step 6: Final answer
    x = 728,588.40

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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.