Home / 686,926.09-947,943.83-380,953.13

Finding the Fourth Proportional to 686,926.09, 947,943.83 and 380,953.13

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Solution

The fourth proportional to 686,926.09, 947,943.83 and 380,953.13 is: 525,707.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,926.09 : 947,943.83 = 380,953.13 : x
  2. Step 2: Convert to fraction form
    686,926.09/947,943.83 = 380,953.13/x
  3. Step 3: Cross multiply
    686,926.09x = 947,943.83 × 380,953.13
  4. Step 4: Simplify right side
    686,926.09x = 361,122,167,197.92
  5. Step 5: Solve for x
    x = 361,122,167,197.92/686,926.09
  6. Step 6: Final answer
    x = 525,707.46

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1.5x scale

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.