Home / 689,947.29-1,029,674.68-644,262.89

Finding the Fourth Proportional to 689,947.29, 1,029,674.68 and 644,262.89

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Solution

The fourth proportional to 689,947.29, 1,029,674.68 and 644,262.89 is: 961,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,947.29 : 1,029,674.68 = 644,262.89 : x
  2. Step 2: Convert to fraction form
    689,947.29/1,029,674.68 = 644,262.89/x
  3. Step 3: Cross multiply
    689,947.29x = 1,029,674.68 × 644,262.89
  4. Step 4: Simplify right side
    689,947.29x = 663,381,178,337.60
  5. Step 5: Solve for x
    x = 663,381,178,337.60/689,947.29
  6. Step 6: Final answer
    x = 961,495.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.