Home / 510,256,000.80-765,384,001.20-408,219,328.80

Finding the Fourth Proportional to 510,256,000.80, 765,384,001.20 and 408,219,328.80

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Solution

The fourth proportional to 510,256,000.80, 765,384,001.20 and 408,219,328.80 is: 612,328,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,256,000.80 : 765,384,001.20 = 408,219,328.80 : x
  2. Step 2: Convert to fraction form
    510,256,000.80/765,384,001.20 = 408,219,328.80/x
  3. Step 3: Cross multiply
    510,256,000.80x = 765,384,001.20 × 408,219,328.80
  4. Step 4: Simplify right side
    510,256,000.80x = 312,444,543,244,122,432
  5. Step 5: Solve for x
    x = 312,444,543,244,122,432/510,256,000.80
  6. Step 6: Final answer
    x = 612,328,993.20

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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.