Home / 688,919.72-1,033,025.40-309,515.31

Finding the Fourth Proportional to 688,919.72, 1,033,025.40 and 309,515.31

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Solution

The fourth proportional to 688,919.72, 1,033,025.40 and 309,515.31 is: 464,113.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,919.72 : 1,033,025.40 = 309,515.31 : x
  2. Step 2: Convert to fraction form
    688,919.72/1,033,025.40 = 309,515.31/x
  3. Step 3: Cross multiply
    688,919.72x = 1,033,025.40 × 309,515.31
  4. Step 4: Simplify right side
    688,919.72x = 319,737,176,918.87
  5. Step 5: Solve for x
    x = 319,737,176,918.87/688,919.72
  6. Step 6: Final answer
    x = 464,113.84

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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.