Home / 685,822.95-946,341.93-379,823.78

Finding the Fourth Proportional to 685,822.95, 946,341.93 and 379,823.78

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Solution

The fourth proportional to 685,822.95, 946,341.93 and 379,823.78 is: 524,104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,822.95 : 946,341.93 = 379,823.78 : x
  2. Step 2: Convert to fraction form
    685,822.95/946,341.93 = 379,823.78/x
  3. Step 3: Cross multiply
    685,822.95x = 946,341.93 × 379,823.78
  4. Step 4: Simplify right side
    685,822.95x = 359,443,172,815.29
  5. Step 5: Solve for x
    x = 359,443,172,815.29/685,822.95
  6. Step 6: Final answer
    x = 524,104.91

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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.