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Finding the Fourth Proportional to 555,006.20, 832,509.30 and 520,014.20

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Solution

The fourth proportional to 555,006.20, 832,509.30 and 520,014.20 is: 780,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,006.20 : 832,509.30 = 520,014.20 : x
  2. Step 2: Convert to fraction form
    555,006.20/832,509.30 = 520,014.20/x
  3. Step 3: Cross multiply
    555,006.20x = 832,509.30 × 520,014.20
  4. Step 4: Simplify right side
    555,006.20x = 432,916,657,632.06
  5. Step 5: Solve for x
    x = 432,916,657,632.06/555,006.20
  6. Step 6: Final answer
    x = 780,021.30

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Similar ratio
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1.5x scale

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.