Home / 920,945.95-1,381,605.77-289,712.95

Finding the Fourth Proportional to 920,945.95, 1,381,605.77 and 289,712.95

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Solution

The fourth proportional to 920,945.95, 1,381,605.77 and 289,712.95 is: 434,628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,945.95 : 1,381,605.77 = 289,712.95 : x
  2. Step 2: Convert to fraction form
    920,945.95/1,381,605.77 = 289,712.95/x
  3. Step 3: Cross multiply
    920,945.95x = 1,381,605.77 × 289,712.95
  4. Step 4: Simplify right side
    920,945.95x = 400,269,080,633.99
  5. Step 5: Solve for x
    x = 400,269,080,633.99/920,945.95
  6. Step 6: Final answer
    x = 434,628.20

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1.5x scale

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.