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Finding the Fourth Proportional to 661,638.20, 992,457.30 and 600,620.90

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Solution

The fourth proportional to 661,638.20, 992,457.30 and 600,620.90 is: 900,931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,638.20 : 992,457.30 = 600,620.90 : x
  2. Step 2: Convert to fraction form
    661,638.20/992,457.30 = 600,620.90/x
  3. Step 3: Cross multiply
    661,638.20x = 992,457.30 × 600,620.90
  4. Step 4: Simplify right side
    661,638.20x = 596,090,596,737.57
  5. Step 5: Solve for x
    x = 596,090,596,737.57/661,638.20
  6. Step 6: Final answer
    x = 900,931.35

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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.