Home / 915,912.84-1,263,908.11-507,985.39

Finding the Fourth Proportional to 915,912.84, 1,263,908.11 and 507,985.39

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Solution

The fourth proportional to 915,912.84, 1,263,908.11 and 507,985.39 is: 700,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,912.84 : 1,263,908.11 = 507,985.39 : x
  2. Step 2: Convert to fraction form
    915,912.84/1,263,908.11 = 507,985.39/x
  3. Step 3: Cross multiply
    915,912.84x = 1,263,908.11 × 507,985.39
  4. Step 4: Simplify right side
    915,912.84x = 642,046,854,182.51
  5. Step 5: Solve for x
    x = 642,046,854,182.51/915,912.84
  6. Step 6: Final answer
    x = 700,991.21

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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.