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Finding the Fourth Proportional to 520,117.04, 717,751.32 and 290,676.44

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Solution

The fourth proportional to 520,117.04, 717,751.32 and 290,676.44 is: 401,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,117.04 : 717,751.32 = 290,676.44 : x
  2. Step 2: Convert to fraction form
    520,117.04/717,751.32 = 290,676.44/x
  3. Step 3: Cross multiply
    520,117.04x = 717,751.32 × 290,676.44
  4. Step 4: Simplify right side
    520,117.04x = 208,633,398,502.90
  5. Step 5: Solve for x
    x = 208,633,398,502.90/520,117.04
  6. Step 6: Final answer
    x = 401,127.79

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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.