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Finding the Fourth Proportional to 520,048.70, 779,554.65 and 239,075.90

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Solution

The fourth proportional to 520,048.70, 779,554.65 and 239,075.90 is: 358,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,048.70 : 779,554.65 = 239,075.90 : x
  2. Step 2: Convert to fraction form
    520,048.70/779,554.65 = 239,075.90/x
  3. Step 3: Cross multiply
    520,048.70x = 779,554.65 × 239,075.90
  4. Step 4: Simplify right side
    520,048.70x = 186,372,729,547.94
  5. Step 5: Solve for x
    x = 186,372,729,547.94/520,048.70
  6. Step 6: Final answer
    x = 358,375.53

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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.