Home / 915,911.84-1,263,906.74-507,984.39

Finding the Fourth Proportional to 915,911.84, 1,263,906.74 and 507,984.39

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Solution

The fourth proportional to 915,911.84, 1,263,906.74 and 507,984.39 is: 700,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,911.84 : 1,263,906.74 = 507,984.39 : x
  2. Step 2: Convert to fraction form
    915,911.84/1,263,906.74 = 507,984.39/x
  3. Step 3: Cross multiply
    915,911.84x = 1,263,906.74 × 507,984.39
  4. Step 4: Simplify right side
    915,911.84x = 642,044,891,795.87
  5. Step 5: Solve for x
    x = 642,044,891,795.87/915,911.84
  6. Step 6: Final answer
    x = 700,989.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.