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Finding the Fourth Proportional to 520,117.48, 717,759.77 and 290,674.60

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Solution

The fourth proportional to 520,117.48, 717,759.77 and 290,674.60 is: 401,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,117.48 : 717,759.77 = 290,674.60 : x
  2. Step 2: Convert to fraction form
    520,117.48/717,759.77 = 290,674.60/x
  3. Step 3: Cross multiply
    520,117.48x = 717,759.77 × 290,674.60
  4. Step 4: Simplify right side
    520,117.48x = 208,634,534,040.84
  5. Step 5: Solve for x
    x = 208,634,534,040.84/520,117.48
  6. Step 6: Final answer
    x = 401,129.63

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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.