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Finding the Fourth Proportional to 647,886.32, 894,406.82 and 402,950.03

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Solution

The fourth proportional to 647,886.32, 894,406.82 and 402,950.03 is: 556,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,886.32 : 894,406.82 = 402,950.03 : x
  2. Step 2: Convert to fraction form
    647,886.32/894,406.82 = 402,950.03/x
  3. Step 3: Cross multiply
    647,886.32x = 894,406.82 × 402,950.03
  4. Step 4: Simplify right side
    647,886.32x = 360,401,255,682.62
  5. Step 5: Solve for x
    x = 360,401,255,682.62/647,886.32
  6. Step 6: Final answer
    x = 556,272.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.