Home / 1,078,272,803.60-1,617,409,205.40-664,415,421.20

Finding the Fourth Proportional to 1,078,272,803.60, 1,617,409,205.40 and 664,415,421.20

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Solution

The fourth proportional to 1,078,272,803.60, 1,617,409,205.40 and 664,415,421.20 is: 996,623,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,272,803.60 : 1,617,409,205.40 = 664,415,421.20 : x
  2. Step 2: Convert to fraction form
    1,078,272,803.60/1,617,409,205.40 = 664,415,421.20/x
  3. Step 3: Cross multiply
    1,078,272,803.60x = 1,617,409,205.40 × 664,415,421.20
  4. Step 4: Simplify right side
    1,078,272,803.60x = 1,074,631,618,458,598,400
  5. Step 5: Solve for x
    x = 1,074,631,618,458,598,400/1,078,272,803.60
  6. Step 6: Final answer
    x = 996,623,131.80

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Double scale
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Similar ratio
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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.