Home / 1,029,826.71-1,420,755.39-642,416.67

Finding the Fourth Proportional to 1,029,826.71, 1,420,755.39 and 642,416.67

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Solution

The fourth proportional to 1,029,826.71, 1,420,755.39 and 642,416.67 is: 886,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,826.71 : 1,420,755.39 = 642,416.67 : x
  2. Step 2: Convert to fraction form
    1,029,826.71/1,420,755.39 = 642,416.67/x
  3. Step 3: Cross multiply
    1,029,826.71x = 1,420,755.39 × 642,416.67
  4. Step 4: Simplify right side
    1,029,826.71x = 912,716,946,528.35
  5. Step 5: Solve for x
    x = 912,716,946,528.35/1,029,826.71
  6. Step 6: Final answer
    x = 886,282.07

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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.