Home / 431,150,889.60-646,820,812.80-139,968,460.80

Finding the Fourth Proportional to 431,150,889.60, 646,820,812.80 and 139,968,460.80

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Solution

The fourth proportional to 431,150,889.60, 646,820,812.80 and 139,968,460.80 is: 209,983,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,150,889.60 : 646,820,812.80 = 139,968,460.80 : x
  2. Step 2: Convert to fraction form
    431,150,889.60/646,820,812.80 = 139,968,460.80/x
  3. Step 3: Cross multiply
    431,150,889.60x = 646,820,812.80 × 139,968,460.80
  4. Step 4: Simplify right side
    431,150,889.60x = 90,534,513,581,020,944
  5. Step 5: Solve for x
    x = 90,534,513,581,020,944/431,150,889.60
  6. Step 6: Final answer
    x = 209,983,362.59

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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.