Home / 285,024,012.80-427,536,019.20-123,780,876.80

Finding the Fourth Proportional to 285,024,012.80, 427,536,019.20 and 123,780,876.80

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Solution

The fourth proportional to 285,024,012.80, 427,536,019.20 and 123,780,876.80 is: 185,671,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,024,012.80 : 427,536,019.20 = 123,780,876.80 : x
  2. Step 2: Convert to fraction form
    285,024,012.80/427,536,019.20 = 123,780,876.80/x
  3. Step 3: Cross multiply
    285,024,012.80x = 427,536,019.20 × 123,780,876.80
  4. Step 4: Simplify right side
    285,024,012.80x = 52,920,783,320,157,632
  5. Step 5: Solve for x
    x = 52,920,783,320,157,632/285,024,012.80
  6. Step 6: Final answer
    x = 185,671,315.20

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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.