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Finding the Fourth Proportional to 520,029.15, 729,615.45 and 520,029.15

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Solution

The fourth proportional to 520,029.15, 729,615.45 and 520,029.15 is: 729,615.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,029.15 : 729,615.45 = 520,029.15 : x
  2. Step 2: Convert to fraction form
    520,029.15/729,615.45 = 520,029.15/x
  3. Step 3: Cross multiply
    520,029.15x = 729,615.45 × 520,029.15
  4. Step 4: Simplify right side
    520,029.15x = 379,421,302,290.37
  5. Step 5: Solve for x
    x = 379,421,302,290.37/520,029.15
  6. Step 6: Final answer
    x = 729,615.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.