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Finding the Fourth Proportional to 638,495,200.80, 957,742,801.20 and 375,910,202.70

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Solution

The fourth proportional to 638,495,200.80, 957,742,801.20 and 375,910,202.70 is: 563,865,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,495,200.80 : 957,742,801.20 = 375,910,202.70 : x
  2. Step 2: Convert to fraction form
    638,495,200.80/957,742,801.20 = 375,910,202.70/x
  3. Step 3: Cross multiply
    638,495,200.80x = 957,742,801.20 × 375,910,202.70
  4. Step 4: Simplify right side
    638,495,200.80x = 360,025,290,533,557,824
  5. Step 5: Solve for x
    x = 360,025,290,533,557,824/638,495,200.80
  6. Step 6: Final answer
    x = 563,865,304.05

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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.