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Finding the Fourth Proportional to 555,003.20, 832,504.80 and 520,011.20

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Solution

The fourth proportional to 555,003.20, 832,504.80 and 520,011.20 is: 780,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,003.20 : 832,504.80 = 520,011.20 : x
  2. Step 2: Convert to fraction form
    555,003.20/832,504.80 = 520,011.20/x
  3. Step 3: Cross multiply
    555,003.20x = 832,504.80 × 520,011.20
  4. Step 4: Simplify right side
    555,003.20x = 432,911,820,053.76
  5. Step 5: Solve for x
    x = 432,911,820,053.76/555,003.20
  6. Step 6: Final answer
    x = 780,016.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.