Home / 885,920.40-1,328,621.40-317,235.60

Finding the Fourth Proportional to 885,920.40, 1,328,621.40 and 317,235.60

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Solution

The fourth proportional to 885,920.40, 1,328,621.40 and 317,235.60 is: 475,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,920.40 : 1,328,621.40 = 317,235.60 : x
  2. Step 2: Convert to fraction form
    885,920.40/1,328,621.40 = 317,235.60/x
  3. Step 3: Cross multiply
    885,920.40x = 1,328,621.40 × 317,235.60
  4. Step 4: Simplify right side
    885,920.40x = 421,486,007,001.84
  5. Step 5: Solve for x
    x = 421,486,007,001.84/885,920.40
  6. Step 6: Final answer
    x = 475,760.58

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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.