Home / 919,498.64-1,378,803.72-320,445.68

Finding the Fourth Proportional to 919,498.64, 1,378,803.72 and 320,445.68

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Solution

The fourth proportional to 919,498.64, 1,378,803.72 and 320,445.68 is: 480,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,498.64 : 1,378,803.72 = 320,445.68 : x
  2. Step 2: Convert to fraction form
    919,498.64/1,378,803.72 = 320,445.68/x
  3. Step 3: Cross multiply
    919,498.64x = 1,378,803.72 × 320,445.68
  4. Step 4: Simplify right side
    919,498.64x = 441,831,695,641.93
  5. Step 5: Solve for x
    x = 441,831,695,641.93/919,498.64
  6. Step 6: Final answer
    x = 480,513.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.