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Finding the Fourth Proportional to 665,302.70, 997,954.05 and 613,981.10

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Solution

The fourth proportional to 665,302.70, 997,954.05 and 613,981.10 is: 920,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,302.70 : 997,954.05 = 613,981.10 : x
  2. Step 2: Convert to fraction form
    665,302.70/997,954.05 = 613,981.10/x
  3. Step 3: Cross multiply
    665,302.70x = 997,954.05 × 613,981.10
  4. Step 4: Simplify right side
    665,302.70x = 612,724,925,368.46
  5. Step 5: Solve for x
    x = 612,724,925,368.46/665,302.70
  6. Step 6: Final answer
    x = 920,971.65

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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.