Home / 686,530.93-947,435.73-380,589.07

Finding the Fourth Proportional to 686,530.93, 947,435.73 and 380,589.07

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Solution

The fourth proportional to 686,530.93, 947,435.73 and 380,589.07 is: 525,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,530.93 : 947,435.73 = 380,589.07 : x
  2. Step 2: Convert to fraction form
    686,530.93/947,435.73 = 380,589.07/x
  3. Step 3: Cross multiply
    686,530.93x = 947,435.73 × 380,589.07
  4. Step 4: Simplify right side
    686,530.93x = 360,583,677,982.90
  5. Step 5: Solve for x
    x = 360,583,677,982.90/686,530.93
  6. Step 6: Final answer
    x = 525,225.68

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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.