Home / 689,128.08-951,017.31-417,245.70

Finding the Fourth Proportional to 689,128.08, 951,017.31 and 417,245.70

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Solution

The fourth proportional to 689,128.08, 951,017.31 and 417,245.70 is: 575,811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,128.08 : 951,017.31 = 417,245.70 : x
  2. Step 2: Convert to fraction form
    689,128.08/951,017.31 = 417,245.70/x
  3. Step 3: Cross multiply
    689,128.08x = 951,017.31 × 417,245.70
  4. Step 4: Simplify right side
    689,128.08x = 396,807,883,223.07
  5. Step 5: Solve for x
    x = 396,807,883,223.07/689,128.08
  6. Step 6: Final answer
    x = 575,811.51

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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.