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Finding the Fourth Proportional to 551,443.60, 827,165.40 and 314,810.20

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Solution

The fourth proportional to 551,443.60, 827,165.40 and 314,810.20 is: 472,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,443.60 : 827,165.40 = 314,810.20 : x
  2. Step 2: Convert to fraction form
    551,443.60/827,165.40 = 314,810.20/x
  3. Step 3: Cross multiply
    551,443.60x = 827,165.40 × 314,810.20
  4. Step 4: Simplify right side
    551,443.60x = 260,400,105,007.08
  5. Step 5: Solve for x
    x = 260,400,105,007.08/551,443.60
  6. Step 6: Final answer
    x = 472,215.30

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1.5x scale

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.