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Finding the Fourth Proportional to 556,943.69, 768,561.71 and 302,289.41

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Solution

The fourth proportional to 556,943.69, 768,561.71 and 302,289.41 is: 417,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,943.69 : 768,561.71 = 302,289.41 : x
  2. Step 2: Convert to fraction form
    556,943.69/768,561.71 = 302,289.41/x
  3. Step 3: Cross multiply
    556,943.69x = 768,561.71 × 302,289.41
  4. Step 4: Simplify right side
    556,943.69x = 232,328,060,510.24
  5. Step 5: Solve for x
    x = 232,328,060,510.24/556,943.69
  6. Step 6: Final answer
    x = 417,148.21

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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.