Home / 1,285,312.79-1,772,697.41-1,129,931.86

Finding the Fourth Proportional to 1,285,312.79, 1,772,697.41 and 1,129,931.86

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Solution

The fourth proportional to 1,285,312.79, 1,772,697.41 and 1,129,931.86 is: 1,558,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,312.79 : 1,772,697.41 = 1,129,931.86 : x
  2. Step 2: Convert to fraction form
    1,285,312.79/1,772,697.41 = 1,129,931.86/x
  3. Step 3: Cross multiply
    1,285,312.79x = 1,772,697.41 × 1,129,931.86
  4. Step 4: Simplify right side
    1,285,312.79x = 2,003,027,287,944.37
  5. Step 5: Solve for x
    x = 2,003,027,287,944.37/1,285,312.79
  6. Step 6: Final answer
    x = 1,558,396.76

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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.