Home / 919,290.51-1,378,935.81-288,255.15

Finding the Fourth Proportional to 919,290.51, 1,378,935.81 and 288,255.15

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Solution

The fourth proportional to 919,290.51, 1,378,935.81 and 288,255.15 is: 432,382.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,290.51 : 1,378,935.81 = 288,255.15 : x
  2. Step 2: Convert to fraction form
    919,290.51/1,378,935.81 = 288,255.15/x
  3. Step 3: Cross multiply
    919,290.51x = 1,378,935.81 × 288,255.15
  4. Step 4: Simplify right side
    919,290.51x = 397,485,348,751.92
  5. Step 5: Solve for x
    x = 397,485,348,751.92/919,290.51
  6. Step 6: Final answer
    x = 432,382.74

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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.