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Finding the Fourth Proportional to 605,638.60, 908,457.90 and 578,082.40

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Solution

The fourth proportional to 605,638.60, 908,457.90 and 578,082.40 is: 867,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,638.60 : 908,457.90 = 578,082.40 : x
  2. Step 2: Convert to fraction form
    605,638.60/908,457.90 = 578,082.40/x
  3. Step 3: Cross multiply
    605,638.60x = 908,457.90 × 578,082.40
  4. Step 4: Simplify right side
    605,638.60x = 525,163,523,130.96
  5. Step 5: Solve for x
    x = 525,163,523,130.96/605,638.60
  6. Step 6: Final answer
    x = 867,123.60

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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.