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Finding the Fourth Proportional to 509,627.34, 764,437.95 and 130,547.34

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Solution

The fourth proportional to 509,627.34, 764,437.95 and 130,547.34 is: 195,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,627.34 : 764,437.95 = 130,547.34 : x
  2. Step 2: Convert to fraction form
    509,627.34/764,437.95 = 130,547.34/x
  3. Step 3: Cross multiply
    509,627.34x = 764,437.95 × 130,547.34
  4. Step 4: Simplify right side
    509,627.34x = 99,795,340,967.55
  5. Step 5: Solve for x
    x = 99,795,340,967.55/509,627.34
  6. Step 6: Final answer
    x = 195,820.23

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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.