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Finding the Fourth Proportional to 615,619.20, 923,428.80 and 349,898.70

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Solution

The fourth proportional to 615,619.20, 923,428.80 and 349,898.70 is: 524,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,619.20 : 923,428.80 = 349,898.70 : x
  2. Step 2: Convert to fraction form
    615,619.20/923,428.80 = 349,898.70/x
  3. Step 3: Cross multiply
    615,619.20x = 923,428.80 × 349,898.70
  4. Step 4: Simplify right side
    615,619.20x = 323,106,536,662.56
  5. Step 5: Solve for x
    x = 323,106,536,662.56/615,619.20
  6. Step 6: Final answer
    x = 524,848.05

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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.