Home / 919,713.90-1,269,196.02-511,808.76

Finding the Fourth Proportional to 919,713.90, 1,269,196.02 and 511,808.76

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Solution

The fourth proportional to 919,713.90, 1,269,196.02 and 511,808.76 is: 706,290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,713.90 : 1,269,196.02 = 511,808.76 : x
  2. Step 2: Convert to fraction form
    919,713.90/1,269,196.02 = 511,808.76/x
  3. Step 3: Cross multiply
    919,713.90x = 1,269,196.02 × 511,808.76
  4. Step 4: Simplify right side
    919,713.90x = 649,585,641,193.14
  5. Step 5: Solve for x
    x = 649,585,641,193.14/919,713.90
  6. Step 6: Final answer
    x = 706,290.99

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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.