Home / 790,566,565.20-1,090,981,963.42-438,165,307.58

Finding the Fourth Proportional to 790,566,565.20, 1,090,981,963.42 and 438,165,307.58

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Solution

The fourth proportional to 790,566,565.20, 1,090,981,963.42 and 438,165,307.58 is: 604,668,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,566,565.20 : 1,090,981,963.42 = 438,165,307.58 : x
  2. Step 2: Convert to fraction form
    790,566,565.20/1,090,981,963.42 = 438,165,307.58/x
  3. Step 3: Cross multiply
    790,566,565.20x = 1,090,981,963.42 × 438,165,307.58
  4. Step 4: Simplify right side
    790,566,565.20x = 478,030,447,566,156,608
  5. Step 5: Solve for x
    x = 478,030,447,566,156,608/790,566,565.20
  6. Step 6: Final answer
    x = 604,668,181.79

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Double scale
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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.