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Finding the Fourth Proportional to 604,901.30, 907,643.55 and 427,025.30

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Solution

The fourth proportional to 604,901.30, 907,643.55 and 427,025.30 is: 640,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,901.30 : 907,643.55 = 427,025.30 : x
  2. Step 2: Convert to fraction form
    604,901.30/907,643.55 = 427,025.30/x
  3. Step 3: Cross multiply
    604,901.30x = 907,643.55 × 427,025.30
  4. Step 4: Simplify right side
    604,901.30x = 387,586,759,231.82
  5. Step 5: Solve for x
    x = 387,586,759,231.82/604,901.30
  6. Step 6: Final answer
    x = 640,743.80

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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.