Home / 645,249.70-890,441.67-358,752.70

Finding the Fourth Proportional to 645,249.70, 890,441.67 and 358,752.70

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Solution

The fourth proportional to 645,249.70, 890,441.67 and 358,752.70 is: 495,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,249.70 : 890,441.67 = 358,752.70 : x
  2. Step 2: Convert to fraction form
    645,249.70/890,441.67 = 358,752.70/x
  3. Step 3: Cross multiply
    645,249.70x = 890,441.67 × 358,752.70
  4. Step 4: Simplify right side
    645,249.70x = 319,448,353,305.01
  5. Step 5: Solve for x
    x = 319,448,353,305.01/645,249.70
  6. Step 6: Final answer
    x = 495,077.10

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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.