Home / 885,741,805.40-1,328,990,621.70-425,443,040.60

Finding the Fourth Proportional to 885,741,805.40, 1,328,990,621.70 and 425,443,040.60

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Solution

The fourth proportional to 885,741,805.40, 1,328,990,621.70 and 425,443,040.60 is: 638,346,081.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,741,805.40 : 1,328,990,621.70 = 425,443,040.60 : x
  2. Step 2: Convert to fraction form
    885,741,805.40/1,328,990,621.70 = 425,443,040.60/x
  3. Step 3: Cross multiply
    885,741,805.40x = 1,328,990,621.70 × 425,443,040.60
  4. Step 4: Simplify right side
    885,741,805.40x = 565,409,811,024,932,416
  5. Step 5: Solve for x
    x = 565,409,811,024,932,416/885,741,805.40
  6. Step 6: Final answer
    x = 638,346,081.87

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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.