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Finding the Fourth Proportional to 507,920.04, 700,787.70 and 400,155.54

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Solution

The fourth proportional to 507,920.04, 700,787.70 and 400,155.54 is: 552,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,920.04 : 700,787.70 = 400,155.54 : x
  2. Step 2: Convert to fraction form
    507,920.04/700,787.70 = 400,155.54/x
  3. Step 3: Cross multiply
    507,920.04x = 700,787.70 × 400,155.54
  4. Step 4: Simplify right side
    507,920.04x = 280,424,080,518.86
  5. Step 5: Solve for x
    x = 280,424,080,518.86/507,920.04
  6. Step 6: Final answer
    x = 552,102.81

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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.