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Finding the Fourth Proportional to 666,028.38, 918,505.68 and 436,502.04

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Solution

The fourth proportional to 666,028.38, 918,505.68 and 436,502.04 is: 601,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,028.38 : 918,505.68 = 436,502.04 : x
  2. Step 2: Convert to fraction form
    666,028.38/918,505.68 = 436,502.04/x
  3. Step 3: Cross multiply
    666,028.38x = 918,505.68 × 436,502.04
  4. Step 4: Simplify right side
    666,028.38x = 400,929,603,071.59
  5. Step 5: Solve for x
    x = 400,929,603,071.59/666,028.38
  6. Step 6: Final answer
    x = 601,970.75

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1.5x scale

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.