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Finding the Fourth Proportional to 520,574.95, 779,453.72 and 340,211.03

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Solution

The fourth proportional to 520,574.95, 779,453.72 and 340,211.03 is: 509,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,574.95 : 779,453.72 = 340,211.03 : x
  2. Step 2: Convert to fraction form
    520,574.95/779,453.72 = 340,211.03/x
  3. Step 3: Cross multiply
    520,574.95x = 779,453.72 × 340,211.03
  4. Step 4: Simplify right side
    520,574.95x = 265,178,752,918.53
  5. Step 5: Solve for x
    x = 265,178,752,918.53/520,574.95
  6. Step 6: Final answer
    x = 509,395.92

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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.