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Finding the Fourth Proportional to 520,430.84, 717,974.63 and 348,404.22

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Solution

The fourth proportional to 520,430.84, 717,974.63 and 348,404.22 is: 480,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,430.84 : 717,974.63 = 348,404.22 : x
  2. Step 2: Convert to fraction form
    520,430.84/717,974.63 = 348,404.22/x
  3. Step 3: Cross multiply
    520,430.84x = 717,974.63 × 348,404.22
  4. Step 4: Simplify right side
    520,430.84x = 250,145,392,469.21
  5. Step 5: Solve for x
    x = 250,145,392,469.21/520,430.84
  6. Step 6: Final answer
    x = 480,650.60

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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.