Home / 811,598,487.39-1,120,008,063.75-440,320,518.75

Finding the Fourth Proportional to 811,598,487.39, 1,120,008,063.75 and 440,320,518.75

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Solution

The fourth proportional to 811,598,487.39, 1,120,008,063.75 and 440,320,518.75 is: 607,643,482.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,598,487.39 : 1,120,008,063.75 = 440,320,518.75 : x
  2. Step 2: Convert to fraction form
    811,598,487.39/1,120,008,063.75 = 440,320,518.75/x
  3. Step 3: Cross multiply
    811,598,487.39x = 1,120,008,063.75 × 440,320,518.75
  4. Step 4: Simplify right side
    811,598,487.39x = 493,162,531,634,583,040
  5. Step 5: Solve for x
    x = 493,162,531,634,583,040/811,598,487.39
  6. Step 6: Final answer
    x = 607,643,482.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.