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Finding the Fourth Proportional to 556,790.66, 768,373.20 and 302,141.87

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Solution

The fourth proportional to 556,790.66, 768,373.20 and 302,141.87 is: 416,956.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,790.66 : 768,373.20 = 302,141.87 : x
  2. Step 2: Convert to fraction form
    556,790.66/768,373.20 = 302,141.87/x
  3. Step 3: Cross multiply
    556,790.66x = 768,373.20 × 302,141.87
  4. Step 4: Simplify right side
    556,790.66x = 232,157,711,664.02
  5. Step 5: Solve for x
    x = 232,157,711,664.02/556,790.66
  6. Step 6: Final answer
    x = 416,956.91

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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.