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Finding the Fourth Proportional to 429,382.35, 644,073.53 and 349,666.20

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Solution

The fourth proportional to 429,382.35, 644,073.53 and 349,666.20 is: 524,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,382.35 : 644,073.53 = 349,666.20 : x
  2. Step 2: Convert to fraction form
    429,382.35/644,073.53 = 349,666.20/x
  3. Step 3: Cross multiply
    429,382.35x = 644,073.53 × 349,666.20
  4. Step 4: Simplify right side
    429,382.35x = 225,210,742,007.36
  5. Step 5: Solve for x
    x = 225,210,742,007.36/429,382.35
  6. Step 6: Final answer
    x = 524,499.30

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Similar ratio
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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.