Home / 821,931.74-1,133,945.43-515,829.50

Finding the Fourth Proportional to 821,931.74, 1,133,945.43 and 515,829.50

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Solution

The fourth proportional to 821,931.74, 1,133,945.43 and 515,829.50 is: 711,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,931.74 : 1,133,945.43 = 515,829.50 : x
  2. Step 2: Convert to fraction form
    821,931.74/1,133,945.43 = 515,829.50/x
  3. Step 3: Cross multiply
    821,931.74x = 1,133,945.43 × 515,829.50
  4. Step 4: Simplify right side
    821,931.74x = 584,922,504,184.19
  5. Step 5: Solve for x
    x = 584,922,504,184.19/821,931.74
  6. Step 6: Final answer
    x = 711,643.65

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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.