Home / 919,977.89-1,269,569.39-512,070.95

Finding the Fourth Proportional to 919,977.89, 1,269,569.39 and 512,070.95

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Solution

The fourth proportional to 919,977.89, 1,269,569.39 and 512,070.95 is: 706,657.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,977.89 : 1,269,569.39 = 512,070.95 : x
  2. Step 2: Convert to fraction form
    919,977.89/1,269,569.39 = 512,070.95/x
  3. Step 3: Cross multiply
    919,977.89x = 1,269,569.39 × 512,070.95
  4. Step 4: Simplify right side
    919,977.89x = 650,109,594,720.02
  5. Step 5: Solve for x
    x = 650,109,594,720.02/919,977.89
  6. Step 6: Final answer
    x = 706,657.85

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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.