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Finding the Fourth Proportional to 607,671.36, 911,701.70 and 425,491.87

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Solution

The fourth proportional to 607,671.36, 911,701.70 and 425,491.87 is: 638,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,671.36 : 911,701.70 = 425,491.87 : x
  2. Step 2: Convert to fraction form
    607,671.36/911,701.70 = 425,491.87/x
  3. Step 3: Cross multiply
    607,671.36x = 911,701.70 × 425,491.87
  4. Step 4: Simplify right side
    607,671.36x = 387,921,659,579.18
  5. Step 5: Solve for x
    x = 387,921,659,579.18/607,671.36
  6. Step 6: Final answer
    x = 638,374.10

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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.