Home / 885,679,518.80-1,328,519,278.20-425,506,725.20

Finding the Fourth Proportional to 885,679,518.80, 1,328,519,278.20 and 425,506,725.20

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Solution

The fourth proportional to 885,679,518.80, 1,328,519,278.20 and 425,506,725.20 is: 638,260,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,679,518.80 : 1,328,519,278.20 = 425,506,725.20 : x
  2. Step 2: Convert to fraction form
    885,679,518.80/1,328,519,278.20 = 425,506,725.20/x
  3. Step 3: Cross multiply
    885,679,518.80x = 1,328,519,278.20 × 425,506,725.20
  4. Step 4: Simplify right side
    885,679,518.80x = 565,293,887,431,949,760
  5. Step 5: Solve for x
    x = 565,293,887,431,949,760/885,679,518.80
  6. Step 6: Final answer
    x = 638,260,087.80

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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.