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Finding the Fourth Proportional to 556,818.71, 768,409.79 and 302,169.89

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Solution

The fourth proportional to 556,818.71, 768,409.79 and 302,169.89 is: 416,994.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,818.71 : 768,409.79 = 302,169.89 : x
  2. Step 2: Convert to fraction form
    556,818.71/768,409.79 = 302,169.89/x
  3. Step 3: Cross multiply
    556,818.71x = 768,409.79 × 302,169.89
  4. Step 4: Simplify right side
    556,818.71x = 232,190,303,829.10
  5. Step 5: Solve for x
    x = 232,190,303,829.10/556,818.71
  6. Step 6: Final answer
    x = 416,994.44

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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.