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Finding the Fourth Proportional to 721,916.84, 995,809.38 and 463,706.86

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Solution

The fourth proportional to 721,916.84, 995,809.38 and 463,706.86 is: 639,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,916.84 : 995,809.38 = 463,706.86 : x
  2. Step 2: Convert to fraction form
    721,916.84/995,809.38 = 463,706.86/x
  3. Step 3: Cross multiply
    721,916.84x = 995,809.38 × 463,706.86
  4. Step 4: Simplify right side
    721,916.84x = 461,763,640,758.35
  5. Step 5: Solve for x
    x = 461,763,640,758.35/721,916.84
  6. Step 6: Final answer
    x = 639,635.50

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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.