Home / 654,828.20-981,320.70-485,023.40

Finding the Fourth Proportional to 654,828.20, 981,320.70 and 485,023.40

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Solution

The fourth proportional to 654,828.20, 981,320.70 and 485,023.40 is: 726,852.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,828.20 : 981,320.70 = 485,023.40 : x
  2. Step 2: Convert to fraction form
    654,828.20/981,320.70 = 485,023.40/x
  3. Step 3: Cross multiply
    654,828.20x = 981,320.70 × 485,023.40
  4. Step 4: Simplify right side
    654,828.20x = 475,963,502,404.38
  5. Step 5: Solve for x
    x = 475,963,502,404.38/654,828.20
  6. Step 6: Final answer
    x = 726,852.48

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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.