Home / 672,065.90-1,008,098.85-388,630.70

Finding the Fourth Proportional to 672,065.90, 1,008,098.85 and 388,630.70

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Solution

The fourth proportional to 672,065.90, 1,008,098.85 and 388,630.70 is: 582,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,065.90 : 1,008,098.85 = 388,630.70 : x
  2. Step 2: Convert to fraction form
    672,065.90/1,008,098.85 = 388,630.70/x
  3. Step 3: Cross multiply
    672,065.90x = 1,008,098.85 × 388,630.70
  4. Step 4: Simplify right side
    672,065.90x = 391,778,161,744.70
  5. Step 5: Solve for x
    x = 391,778,161,744.70/672,065.90
  6. Step 6: Final answer
    x = 582,946.05

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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.