Home / 669,129.84-1,003,696.20-470,339.76

Finding the Fourth Proportional to 669,129.84, 1,003,696.20 and 470,339.76

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Solution

The fourth proportional to 669,129.84, 1,003,696.20 and 470,339.76 is: 705,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,129.84 : 1,003,696.20 = 470,339.76 : x
  2. Step 2: Convert to fraction form
    669,129.84/1,003,696.20 = 470,339.76/x
  3. Step 3: Cross multiply
    669,129.84x = 1,003,696.20 × 470,339.76
  4. Step 4: Simplify right side
    669,129.84x = 472,078,229,820.91
  5. Step 5: Solve for x
    x = 472,078,229,820.91/669,129.84
  6. Step 6: Final answer
    x = 705,510.65

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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.