Home / 442,880,642.60-664,320,963.90-313,634,191.40

Finding the Fourth Proportional to 442,880,642.60, 664,320,963.90 and 313,634,191.40

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Solution

The fourth proportional to 442,880,642.60, 664,320,963.90 and 313,634,191.40 is: 470,451,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,880,642.60 : 664,320,963.90 = 313,634,191.40 : x
  2. Step 2: Convert to fraction form
    442,880,642.60/664,320,963.90 = 313,634,191.40/x
  3. Step 3: Cross multiply
    442,880,642.60x = 664,320,963.90 × 313,634,191.40
  4. Step 4: Simplify right side
    442,880,642.60x = 208,353,768,342,845,056
  5. Step 5: Solve for x
    x = 208,353,768,342,845,056/442,880,642.60
  6. Step 6: Final answer
    x = 470,451,287.10

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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.