Home / 685,910.20-946,545.85-379,985.95

Finding the Fourth Proportional to 685,910.20, 946,545.85 and 379,985.95

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Solution

The fourth proportional to 685,910.20, 946,545.85 and 379,985.95 is: 524,374.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,910.20 : 946,545.85 = 379,985.95 : x
  2. Step 2: Convert to fraction form
    685,910.20/946,545.85 = 379,985.95/x
  3. Step 3: Cross multiply
    685,910.20x = 946,545.85 × 379,985.95
  4. Step 4: Simplify right side
    685,910.20x = 359,674,124,030.81
  5. Step 5: Solve for x
    x = 359,674,124,030.81/685,910.20
  6. Step 6: Final answer
    x = 524,374.95

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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.