Home / 691,039.20-953,595.52-380,931.76

Finding the Fourth Proportional to 691,039.20, 953,595.52 and 380,931.76

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Solution

The fourth proportional to 691,039.20, 953,595.52 and 380,931.76 is: 525,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,039.20 : 953,595.52 = 380,931.76 : x
  2. Step 2: Convert to fraction form
    691,039.20/953,595.52 = 380,931.76/x
  3. Step 3: Cross multiply
    691,039.20x = 953,595.52 × 380,931.76
  4. Step 4: Simplify right side
    691,039.20x = 363,254,819,761.72
  5. Step 5: Solve for x
    x = 363,254,819,761.72/691,039.20
  6. Step 6: Final answer
    x = 525,664.56

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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.