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Finding the Fourth Proportional to 507,693.78, 700,617.36 and 281,339.28

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Solution

The fourth proportional to 507,693.78, 700,617.36 and 281,339.28 is: 388,248.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,693.78 : 700,617.36 = 281,339.28 : x
  2. Step 2: Convert to fraction form
    507,693.78/700,617.36 = 281,339.28/x
  3. Step 3: Cross multiply
    507,693.78x = 700,617.36 × 281,339.28
  4. Step 4: Simplify right side
    507,693.78x = 197,111,183,617.90
  5. Step 5: Solve for x
    x = 197,111,183,617.90/507,693.78
  6. Step 6: Final answer
    x = 388,248.18

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1.5x scale

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.