Home / 743,569.14-1,026,122.89-421,340.65

Finding the Fourth Proportional to 743,569.14, 1,026,122.89 and 421,340.65

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Solution

The fourth proportional to 743,569.14, 1,026,122.89 and 421,340.65 is: 581,448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,569.14 : 1,026,122.89 = 421,340.65 : x
  2. Step 2: Convert to fraction form
    743,569.14/1,026,122.89 = 421,340.65/x
  3. Step 3: Cross multiply
    743,569.14x = 1,026,122.89 × 421,340.65
  4. Step 4: Simplify right side
    743,569.14x = 432,347,285,452.48
  5. Step 5: Solve for x
    x = 432,347,285,452.48/743,569.14
  6. Step 6: Final answer
    x = 581,448.67

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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.