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Finding the Fourth Proportional to 638,875,603.80, 957,652,056.90 and 347,126,304.60

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Solution

The fourth proportional to 638,875,603.80, 957,652,056.90 and 347,126,304.60 is: 520,330,120.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,875,603.80 : 957,652,056.90 = 347,126,304.60 : x
  2. Step 2: Convert to fraction form
    638,875,603.80/957,652,056.90 = 347,126,304.60/x
  3. Step 3: Cross multiply
    638,875,603.80x = 957,652,056.90 × 347,126,304.60
  4. Step 4: Simplify right side
    638,875,603.80x = 332,426,219,604,285,952
  5. Step 5: Solve for x
    x = 332,426,219,604,285,952/638,875,603.80
  6. Step 6: Final answer
    x = 520,330,120.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.