Home / 665,734.72-917,991.40-423,707.62

Finding the Fourth Proportional to 665,734.72, 917,991.40 and 423,707.62

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Solution

The fourth proportional to 665,734.72, 917,991.40 and 423,707.62 is: 584,256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,734.72 : 917,991.40 = 423,707.62 : x
  2. Step 2: Convert to fraction form
    665,734.72/917,991.40 = 423,707.62/x
  3. Step 3: Cross multiply
    665,734.72x = 917,991.40 × 423,707.62
  4. Step 4: Simplify right side
    665,734.72x = 388,959,951,274.47
  5. Step 5: Solve for x
    x = 388,959,951,274.47/665,734.72
  6. Step 6: Final answer
    x = 584,256.67

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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.