Home / 910,069.70-1,256,146-528,219.50

Finding the Fourth Proportional to 910,069.70, 1,256,146 and 528,219.50

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Solution

The fourth proportional to 910,069.70, 1,256,146 and 528,219.50 is: 729,087.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,069.70 : 1,256,146 = 528,219.50 : x
  2. Step 2: Convert to fraction form
    910,069.70/1,256,146 = 528,219.50/x
  3. Step 3: Cross multiply
    910,069.70x = 1,256,146 × 528,219.50
  4. Step 4: Simplify right side
    910,069.70x = 663,520,812,047
  5. Step 5: Solve for x
    x = 663,520,812,047/910,069.70
  6. Step 6: Final answer
    x = 729,087.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.