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Finding the Fourth Proportional to 556,954.57, 768,465.59 and 315,237.15

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Solution

The fourth proportional to 556,954.57, 768,465.59 and 315,237.15 is: 434,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,954.57 : 768,465.59 = 315,237.15 : x
  2. Step 2: Convert to fraction form
    556,954.57/768,465.59 = 315,237.15/x
  3. Step 3: Cross multiply
    556,954.57x = 768,465.59 × 315,237.15
  4. Step 4: Simplify right side
    556,954.57x = 242,248,903,936.40
  5. Step 5: Solve for x
    x = 242,248,903,936.40/556,954.57
  6. Step 6: Final answer
    x = 434,952.72

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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.