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Finding the Fourth Proportional to 556,960.40, 768,473.58 and 315,242.94

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Solution

The fourth proportional to 556,960.40, 768,473.58 and 315,242.94 is: 434,960.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,960.40 : 768,473.58 = 315,242.94 : x
  2. Step 2: Convert to fraction form
    556,960.40/768,473.58 = 315,242.94/x
  3. Step 3: Cross multiply
    556,960.40x = 768,473.58 × 315,242.94
  4. Step 4: Simplify right side
    556,960.40x = 242,255,870,671.53
  5. Step 5: Solve for x
    x = 242,255,870,671.53/556,960.40
  6. Step 6: Final answer
    x = 434,960.67

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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.