Home / 686,595.24-947,501.28-380,670.66

Finding the Fourth Proportional to 686,595.24, 947,501.28 and 380,670.66

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Solution

The fourth proportional to 686,595.24, 947,501.28 and 380,670.66 is: 525,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,595.24 : 947,501.28 = 380,670.66 : x
  2. Step 2: Convert to fraction form
    686,595.24/947,501.28 = 380,670.66/x
  3. Step 3: Cross multiply
    686,595.24x = 947,501.28 × 380,670.66
  4. Step 4: Simplify right side
    686,595.24x = 360,685,937,608.45
  5. Step 5: Solve for x
    x = 360,685,937,608.45/686,595.24
  6. Step 6: Final answer
    x = 525,325.43

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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.