Home / 442,880,626.60-664,320,939.90-313,634,175.40

Finding the Fourth Proportional to 442,880,626.60, 664,320,939.90 and 313,634,175.40

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Solution

The fourth proportional to 442,880,626.60, 664,320,939.90 and 313,634,175.40 is: 470,451,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,880,626.60 : 664,320,939.90 = 313,634,175.40 : x
  2. Step 2: Convert to fraction form
    442,880,626.60/664,320,939.90 = 313,634,175.40/x
  3. Step 3: Cross multiply
    442,880,626.60x = 664,320,939.90 × 313,634,175.40
  4. Step 4: Simplify right side
    442,880,626.60x = 208,353,750,186,489,440
  5. Step 5: Solve for x
    x = 208,353,750,186,489,440/442,880,626.60
  6. Step 6: Final answer
    x = 470,451,263.10

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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.