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Finding the Fourth Proportional to 615,064.80, 922,856.40 and 334,783.20

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Solution

The fourth proportional to 615,064.80, 922,856.40 and 334,783.20 is: 502,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,064.80 : 922,856.40 = 334,783.20 : x
  2. Step 2: Convert to fraction form
    615,064.80/922,856.40 = 334,783.20/x
  3. Step 3: Cross multiply
    615,064.80x = 922,856.40 × 334,783.20
  4. Step 4: Simplify right side
    615,064.80x = 308,956,818,732.48
  5. Step 5: Solve for x
    x = 308,956,818,732.48/615,064.80
  6. Step 6: Final answer
    x = 502,315.88

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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.