Home / 910,853.70-1,257,088.86-528,880.56

Finding the Fourth Proportional to 910,853.70, 1,257,088.86 and 528,880.56

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Solution

The fourth proportional to 910,853.70, 1,257,088.86 and 528,880.56 is: 729,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,853.70 : 1,257,088.86 = 528,880.56 : x
  2. Step 2: Convert to fraction form
    910,853.70/1,257,088.86 = 528,880.56/x
  3. Step 3: Cross multiply
    910,853.70x = 1,257,088.86 × 528,880.56
  4. Step 4: Simplify right side
    910,853.70x = 664,849,860,246.56
  5. Step 5: Solve for x
    x = 664,849,860,246.56/910,853.70
  6. Step 6: Final answer
    x = 729,919.48

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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.