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Finding the Fourth Proportional to 520,116.48, 717,758.39 and 290,673.60

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Solution

The fourth proportional to 520,116.48, 717,758.39 and 290,673.60 is: 401,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,116.48 : 717,758.39 = 290,673.60 : x
  2. Step 2: Convert to fraction form
    520,116.48/717,758.39 = 290,673.60/x
  3. Step 3: Cross multiply
    520,116.48x = 717,758.39 × 290,673.60
  4. Step 4: Simplify right side
    520,116.48x = 208,633,415,077.40
  5. Step 5: Solve for x
    x = 208,633,415,077.40/520,116.48
  6. Step 6: Final answer
    x = 401,128.26

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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.