Home / 670,375.20-1,005,890.40-315,424.32

Finding the Fourth Proportional to 670,375.20, 1,005,890.40 and 315,424.32

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Solution

The fourth proportional to 670,375.20, 1,005,890.40 and 315,424.32 is: 473,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,375.20 : 1,005,890.40 = 315,424.32 : x
  2. Step 2: Convert to fraction form
    670,375.20/1,005,890.40 = 315,424.32/x
  3. Step 3: Cross multiply
    670,375.20x = 1,005,890.40 × 315,424.32
  4. Step 4: Simplify right side
    670,375.20x = 317,282,295,414.53
  5. Step 5: Solve for x
    x = 317,282,295,414.53/670,375.20
  6. Step 6: Final answer
    x = 473,290.62

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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.