Home / 919,980.39-1,269,572.83-512,073.45

Finding the Fourth Proportional to 919,980.39, 1,269,572.83 and 512,073.45

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Solution

The fourth proportional to 919,980.39, 1,269,572.83 and 512,073.45 is: 706,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,980.39 : 1,269,572.83 = 512,073.45 : x
  2. Step 2: Convert to fraction form
    919,980.39/1,269,572.83 = 512,073.45/x
  3. Step 3: Cross multiply
    919,980.39x = 1,269,572.83 × 512,073.45
  4. Step 4: Simplify right side
    919,980.39x = 650,114,539,084.36
  5. Step 5: Solve for x
    x = 650,114,539,084.36/919,980.39
  6. Step 6: Final answer
    x = 706,661.30

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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.