Home / 747,958,800.60-1,121,938,200.90-438,022,409.40

Finding the Fourth Proportional to 747,958,800.60, 1,121,938,200.90 and 438,022,409.40

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Solution

The fourth proportional to 747,958,800.60, 1,121,938,200.90 and 438,022,409.40 is: 657,033,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,958,800.60 : 1,121,938,200.90 = 438,022,409.40 : x
  2. Step 2: Convert to fraction form
    747,958,800.60/1,121,938,200.90 = 438,022,409.40/x
  3. Step 3: Cross multiply
    747,958,800.60x = 1,121,938,200.90 × 438,022,409.40
  4. Step 4: Simplify right side
    747,958,800.60x = 491,434,073,956,119,232
  5. Step 5: Solve for x
    x = 491,434,073,956,119,232/747,958,800.60
  6. Step 6: Final answer
    x = 657,033,614.10

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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.