Home / 919,296.10-1,378,943.97-288,260.74

Finding the Fourth Proportional to 919,296.10, 1,378,943.97 and 288,260.74

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Solution

The fourth proportional to 919,296.10, 1,378,943.97 and 288,260.74 is: 432,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,296.10 : 1,378,943.97 = 288,260.74 : x
  2. Step 2: Convert to fraction form
    919,296.10/1,378,943.97 = 288,260.74/x
  3. Step 3: Cross multiply
    919,296.10x = 1,378,943.97 × 288,260.74
  4. Step 4: Simplify right side
    919,296.10x = 397,495,409,210.74
  5. Step 5: Solve for x
    x = 397,495,409,210.74/919,296.10
  6. Step 6: Final answer
    x = 432,391.05

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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.