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Finding the Fourth Proportional to 470,420.73, 702,076.10 and 425,020.01

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Solution

The fourth proportional to 470,420.73, 702,076.10 and 425,020.01 is: 634,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,420.73 : 702,076.10 = 425,020.01 : x
  2. Step 2: Convert to fraction form
    470,420.73/702,076.10 = 425,020.01/x
  3. Step 3: Cross multiply
    470,420.73x = 702,076.10 × 425,020.01
  4. Step 4: Simplify right side
    470,420.73x = 298,396,385,407.28
  5. Step 5: Solve for x
    x = 298,396,385,407.28/470,420.73
  6. Step 6: Final answer
    x = 634,318.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.