Home / 663,081,971.20-994,622,956.80-517,963,148.80

Finding the Fourth Proportional to 663,081,971.20, 994,622,956.80 and 517,963,148.80

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Solution

The fourth proportional to 663,081,971.20, 994,622,956.80 and 517,963,148.80 is: 776,944,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,081,971.20 : 994,622,956.80 = 517,963,148.80 : x
  2. Step 2: Convert to fraction form
    663,081,971.20/994,622,956.80 = 517,963,148.80/x
  3. Step 3: Cross multiply
    663,081,971.20x = 994,622,956.80 × 517,963,148.80
  4. Step 4: Simplify right side
    663,081,971.20x = 515,178,038,572,894,336
  5. Step 5: Solve for x
    x = 515,178,038,572,894,336/663,081,971.20
  6. Step 6: Final answer
    x = 776,944,723.20

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Double scale
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Similar ratio
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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.