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Finding the Fourth Proportional to 509,907.30, 765,152.55 and 352,248.90

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Solution

The fourth proportional to 509,907.30, 765,152.55 and 352,248.90 is: 528,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,907.30 : 765,152.55 = 352,248.90 : x
  2. Step 2: Convert to fraction form
    509,907.30/765,152.55 = 352,248.90/x
  3. Step 3: Cross multiply
    509,907.30x = 765,152.55 × 352,248.90
  4. Step 4: Simplify right side
    509,907.30x = 269,524,144,069.70
  5. Step 5: Solve for x
    x = 269,524,144,069.70/509,907.30
  6. Step 6: Final answer
    x = 528,574.79

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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.