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Finding the Fourth Proportional to 556,955.07, 768,466.28 and 315,237.66

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Solution

The fourth proportional to 556,955.07, 768,466.28 and 315,237.66 is: 434,953.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,955.07 : 768,466.28 = 315,237.66 : x
  2. Step 2: Convert to fraction form
    556,955.07/768,466.28 = 315,237.66/x
  3. Step 3: Cross multiply
    556,955.07x = 768,466.28 × 315,237.66
  4. Step 4: Simplify right side
    556,955.07x = 242,249,508,053.77
  5. Step 5: Solve for x
    x = 242,249,508,053.77/556,955.07
  6. Step 6: Final answer
    x = 434,953.41

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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.