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Finding the Fourth Proportional to 520,818.69, 779,954.08 and 470,331.75

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Solution

The fourth proportional to 520,818.69, 779,954.08 and 470,331.75 is: 704,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,818.69 : 779,954.08 = 470,331.75 : x
  2. Step 2: Convert to fraction form
    520,818.69/779,954.08 = 470,331.75/x
  3. Step 3: Cross multiply
    520,818.69x = 779,954.08 × 470,331.75
  4. Step 4: Simplify right side
    520,818.69x = 366,837,167,366.04
  5. Step 5: Solve for x
    x = 366,837,167,366.04/520,818.69
  6. Step 6: Final answer
    x = 704,347.16

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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.