Home / 685,905.63-946,547.94-379,982.60

Finding the Fourth Proportional to 685,905.63, 946,547.94 and 379,982.60

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Solution

The fourth proportional to 685,905.63, 946,547.94 and 379,982.60 is: 524,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,905.63 : 946,547.94 = 379,982.60 : x
  2. Step 2: Convert to fraction form
    685,905.63/946,547.94 = 379,982.60/x
  3. Step 3: Cross multiply
    685,905.63x = 946,547.94 × 379,982.60
  4. Step 4: Simplify right side
    685,905.63x = 359,671,747,265.84
  5. Step 5: Solve for x
    x = 359,671,747,265.84/685,905.63
  6. Step 6: Final answer
    x = 524,374.97

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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.