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Finding the Fourth Proportional to 702,390.42, 969,298.77 and 380,100.51

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Solution

The fourth proportional to 702,390.42, 969,298.77 and 380,100.51 is: 524,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,390.42 : 969,298.77 = 380,100.51 : x
  2. Step 2: Convert to fraction form
    702,390.42/969,298.77 = 380,100.51/x
  3. Step 3: Cross multiply
    702,390.42x = 969,298.77 × 380,100.51
  4. Step 4: Simplify right side
    702,390.42x = 368,430,956,819.37
  5. Step 5: Solve for x
    x = 368,430,956,819.37/702,390.42
  6. Step 6: Final answer
    x = 524,538.70

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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.