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Finding the Fourth Proportional to 790,566,214.71, 1,090,981,479.71 and 438,164,956.60

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Solution

The fourth proportional to 790,566,214.71, 1,090,981,479.71 and 438,164,956.60 is: 604,667,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,566,214.71 : 1,090,981,479.71 = 438,164,956.60 : x
  2. Step 2: Convert to fraction form
    790,566,214.71/1,090,981,479.71 = 438,164,956.60/x
  3. Step 3: Cross multiply
    790,566,214.71x = 1,090,981,479.71 × 438,164,956.60
  4. Step 4: Simplify right side
    790,566,214.71x = 478,029,852,704,176,512
  5. Step 5: Solve for x
    x = 478,029,852,704,176,512/790,566,214.71
  6. Step 6: Final answer
    x = 604,667,697.42

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Half scale
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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.