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Finding the Fourth Proportional to 671,217.45, 926,280 and 369,411.45

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Solution

The fourth proportional to 671,217.45, 926,280 and 369,411.45 is: 509,787.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,217.45 : 926,280 = 369,411.45 : x
  2. Step 2: Convert to fraction form
    671,217.45/926,280 = 369,411.45/x
  3. Step 3: Cross multiply
    671,217.45x = 926,280 × 369,411.45
  4. Step 4: Simplify right side
    671,217.45x = 342,178,437,906
  5. Step 5: Solve for x
    x = 342,178,437,906/671,217.45
  6. Step 6: Final answer
    x = 509,787.76

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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.