Home / 919,570.32-1,378,460.88-439,673.40

Finding the Fourth Proportional to 919,570.32, 1,378,460.88 and 439,673.40

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Solution

The fourth proportional to 919,570.32, 1,378,460.88 and 439,673.40 is: 659,082.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,570.32 : 1,378,460.88 = 439,673.40 : x
  2. Step 2: Convert to fraction form
    919,570.32/1,378,460.88 = 439,673.40/x
  3. Step 3: Cross multiply
    919,570.32x = 1,378,460.88 × 439,673.40
  4. Step 4: Simplify right side
    919,570.32x = 606,072,581,876.59
  5. Step 5: Solve for x
    x = 606,072,581,876.59/919,570.32
  6. Step 6: Final answer
    x = 659,082.37

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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.