Home / 20,407,680,385.40-30,611,520,578.10-15,473,640,423.80

Finding the Fourth Proportional to 20,407,680,385.40, 30,611,520,578.10 and 15,473,640,423.80

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Solution

The fourth proportional to 20,407,680,385.40, 30,611,520,578.10 and 15,473,640,423.80 is: 23,210,460,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,680,385.40 : 30,611,520,578.10 = 15,473,640,423.80 : x
  2. Step 2: Convert to fraction form
    20,407,680,385.40/30,611,520,578.10 = 15,473,640,423.80/x
  3. Step 3: Cross multiply
    20,407,680,385.40x = 30,611,520,578.10 × 15,473,640,423.80
  4. Step 4: Simplify right side
    20,407,680,385.40x = 473,671,662,251,273,682,944
  5. Step 5: Solve for x
    x = 473,671,662,251,273,682,944/20,407,680,385.40
  6. Step 6: Final answer
    x = 23,210,460,635.70

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Double scale
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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.