Home / 790,566,215.52-1,090,981,480.83-438,164,957.41

Finding the Fourth Proportional to 790,566,215.52, 1,090,981,480.83 and 438,164,957.41

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Solution

The fourth proportional to 790,566,215.52, 1,090,981,480.83 and 438,164,957.41 is: 604,667,698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,566,215.52 : 1,090,981,480.83 = 438,164,957.41 : x
  2. Step 2: Convert to fraction form
    790,566,215.52/1,090,981,480.83 = 438,164,957.41/x
  3. Step 3: Cross multiply
    790,566,215.52x = 1,090,981,480.83 × 438,164,957.41
  4. Step 4: Simplify right side
    790,566,215.52x = 478,029,854,081,913,344
  5. Step 5: Solve for x
    x = 478,029,854,081,913,344/790,566,215.52
  6. Step 6: Final answer
    x = 604,667,698.54

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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.