Home / 519,939.18-717,482.34-302,128.56

Finding the Fourth Proportional to 519,939.18, 717,482.34 and 302,128.56

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Solution

The fourth proportional to 519,939.18, 717,482.34 and 302,128.56 is: 416,917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,939.18 : 717,482.34 = 302,128.56 : x
  2. Step 2: Convert to fraction form
    519,939.18/717,482.34 = 302,128.56/x
  3. Step 3: Cross multiply
    519,939.18x = 717,482.34 × 302,128.56
  4. Step 4: Simplify right side
    519,939.18x = 216,771,906,209.63
  5. Step 5: Solve for x
    x = 216,771,906,209.63/519,939.18
  6. Step 6: Final answer
    x = 416,917.81

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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.