Home / 919,290.60-1,378,935.72-288,255.24

Finding the Fourth Proportional to 919,290.60, 1,378,935.72 and 288,255.24

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Solution

The fourth proportional to 919,290.60, 1,378,935.72 and 288,255.24 is: 432,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,290.60 : 1,378,935.72 = 288,255.24 : x
  2. Step 2: Convert to fraction form
    919,290.60/1,378,935.72 = 288,255.24/x
  3. Step 3: Cross multiply
    919,290.60x = 1,378,935.72 × 288,255.24
  4. Step 4: Simplify right side
    919,290.60x = 397,485,446,913.17
  5. Step 5: Solve for x
    x = 397,485,446,913.17/919,290.60
  6. Step 6: Final answer
    x = 432,382.80

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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.