Home / 674,787.78-1,011,681.70-408,485.30

Finding the Fourth Proportional to 674,787.78, 1,011,681.70 and 408,485.30

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Solution

The fourth proportional to 674,787.78, 1,011,681.70 and 408,485.30 is: 612,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,787.78 : 1,011,681.70 = 408,485.30 : x
  2. Step 2: Convert to fraction form
    674,787.78/1,011,681.70 = 408,485.30/x
  3. Step 3: Cross multiply
    674,787.78x = 1,011,681.70 × 408,485.30
  4. Step 4: Simplify right side
    674,787.78x = 413,257,096,649.39
  5. Step 5: Solve for x
    x = 413,257,096,649.39/674,787.78
  6. Step 6: Final answer
    x = 612,425.28

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1.5x scale

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.