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Finding the Fourth Proportional to 489,040.10, 683,826.70 and 489,040.10

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Solution

The fourth proportional to 489,040.10, 683,826.70 and 489,040.10 is: 683,826.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,040.10 : 683,826.70 = 489,040.10 : x
  2. Step 2: Convert to fraction form
    489,040.10/683,826.70 = 489,040.10/x
  3. Step 3: Cross multiply
    489,040.10x = 683,826.70 × 489,040.10
  4. Step 4: Simplify right side
    489,040.10x = 334,418,677,750.67
  5. Step 5: Solve for x
    x = 334,418,677,750.67/489,040.10
  6. Step 6: Final answer
    x = 683,826.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.