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Finding the Fourth Proportional to 654,690.53, 903,368.83 and 368,155.28

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Solution

The fourth proportional to 654,690.53, 903,368.83 and 368,155.28 is: 507,995.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,690.53 : 903,368.83 = 368,155.28 : x
  2. Step 2: Convert to fraction form
    654,690.53/903,368.83 = 368,155.28/x
  3. Step 3: Cross multiply
    654,690.53x = 903,368.83 × 368,155.28
  4. Step 4: Simplify right side
    654,690.53x = 332,579,999,114.69
  5. Step 5: Solve for x
    x = 332,579,999,114.69/654,690.53
  6. Step 6: Final answer
    x = 507,995.74

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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.