Home / 638,669.37-956,919.59-385,417.71

Finding the Fourth Proportional to 638,669.37, 956,919.59 and 385,417.71

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Solution

The fourth proportional to 638,669.37, 956,919.59 and 385,417.71 is: 577,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,669.37 : 956,919.59 = 385,417.71 : x
  2. Step 2: Convert to fraction form
    638,669.37/956,919.59 = 385,417.71/x
  3. Step 3: Cross multiply
    638,669.37x = 956,919.59 × 385,417.71
  4. Step 4: Simplify right side
    638,669.37x = 368,813,761,671.16
  5. Step 5: Solve for x
    x = 368,813,761,671.16/638,669.37
  6. Step 6: Final answer
    x = 577,472.13

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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.