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Finding the Fourth Proportional to 620,767.32, 856,631.28 and 362,668.20

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Solution

The fourth proportional to 620,767.32, 856,631.28 and 362,668.20 is: 500,465.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,767.32 : 856,631.28 = 362,668.20 : x
  2. Step 2: Convert to fraction form
    620,767.32/856,631.28 = 362,668.20/x
  3. Step 3: Cross multiply
    620,767.32x = 856,631.28 × 362,668.20
  4. Step 4: Simplify right side
    620,767.32x = 310,672,924,381.30
  5. Step 5: Solve for x
    x = 310,672,924,381.30/620,767.32
  6. Step 6: Final answer
    x = 500,465.98

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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.