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Finding the Fourth Proportional to 873,753.39, 1,310,779.53 and 400,479.30

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Solution

The fourth proportional to 873,753.39, 1,310,779.53 and 400,479.30 is: 600,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,753.39 : 1,310,779.53 = 400,479.30 : x
  2. Step 2: Convert to fraction form
    873,753.39/1,310,779.53 = 400,479.30/x
  3. Step 3: Cross multiply
    873,753.39x = 1,310,779.53 × 400,479.30
  4. Step 4: Simplify right side
    873,753.39x = 524,940,068,628.73
  5. Step 5: Solve for x
    x = 524,940,068,628.73/873,753.39
  6. Step 6: Final answer
    x = 600,787.45

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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.