Home / 891,518.40-1,230,057.50-528,640.43

Finding the Fourth Proportional to 891,518.40, 1,230,057.50 and 528,640.43

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Solution

The fourth proportional to 891,518.40, 1,230,057.50 and 528,640.43 is: 729,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,518.40 : 1,230,057.50 = 528,640.43 : x
  2. Step 2: Convert to fraction form
    891,518.40/1,230,057.50 = 528,640.43/x
  3. Step 3: Cross multiply
    891,518.40x = 1,230,057.50 × 528,640.43
  4. Step 4: Simplify right side
    891,518.40x = 650,258,116,931.24
  5. Step 5: Solve for x
    x = 650,258,116,931.24/891,518.40
  6. Step 6: Final answer
    x = 729,382.72

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Double scale
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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.