Home / 949,999.78-1,311,000.15-520,306.93

Finding the Fourth Proportional to 949,999.78, 1,311,000.15 and 520,306.93

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Solution

The fourth proportional to 949,999.78, 1,311,000.15 and 520,306.93 is: 718,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    949,999.78 : 1,311,000.15 = 520,306.93 : x
  2. Step 2: Convert to fraction form
    949,999.78/1,311,000.15 = 520,306.93/x
  3. Step 3: Cross multiply
    949,999.78x = 1,311,000.15 × 520,306.93
  4. Step 4: Simplify right side
    949,999.78x = 682,122,463,276.04
  5. Step 5: Solve for x
    x = 682,122,463,276.04/949,999.78
  6. Step 6: Final answer
    x = 718,023.81

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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.