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Finding the Fourth Proportional to 456,908.40, 683,807.40 and 400,921.20

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Solution

The fourth proportional to 456,908.40, 683,807.40 and 400,921.20 is: 600,017.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,908.40 : 683,807.40 = 400,921.20 : x
  2. Step 2: Convert to fraction form
    456,908.40/683,807.40 = 400,921.20/x
  3. Step 3: Cross multiply
    456,908.40x = 683,807.40 × 400,921.20
  4. Step 4: Simplify right side
    456,908.40x = 274,152,883,376.88
  5. Step 5: Solve for x
    x = 274,152,883,376.88/456,908.40
  6. Step 6: Final answer
    x = 600,017.17

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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.