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Finding the Fourth Proportional to 640,043.94, 883,226.52 and 368,068.62

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Solution

The fourth proportional to 640,043.94, 883,226.52 and 368,068.62 is: 507,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,043.94 : 883,226.52 = 368,068.62 : x
  2. Step 2: Convert to fraction form
    640,043.94/883,226.52 = 368,068.62/x
  3. Step 3: Cross multiply
    640,043.94x = 883,226.52 × 368,068.62
  4. Step 4: Simplify right side
    640,043.94x = 325,087,966,363.80
  5. Step 5: Solve for x
    x = 325,087,966,363.80/640,043.94
  6. Step 6: Final answer
    x = 507,915.08

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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.