Home / 645,731.70-890,738.67-403,594.04

Finding the Fourth Proportional to 645,731.70, 890,738.67 and 403,594.04

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Solution

The fourth proportional to 645,731.70, 890,738.67 and 403,594.04 is: 556,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,731.70 : 890,738.67 = 403,594.04 : x
  2. Step 2: Convert to fraction form
    645,731.70/890,738.67 = 403,594.04/x
  3. Step 3: Cross multiply
    645,731.70x = 890,738.67 × 403,594.04
  4. Step 4: Simplify right side
    645,731.70x = 359,496,822,149.85
  5. Step 5: Solve for x
    x = 359,496,822,149.85/645,731.70
  6. Step 6: Final answer
    x = 556,727.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.