Home / 734,718.21-1,013,819.31-407,986.80

Finding the Fourth Proportional to 734,718.21, 1,013,819.31 and 407,986.80

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Solution

The fourth proportional to 734,718.21, 1,013,819.31 and 407,986.80 is: 562,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    734,718.21 : 1,013,819.31 = 407,986.80 : x
  2. Step 2: Convert to fraction form
    734,718.21/1,013,819.31 = 407,986.80/x
  3. Step 3: Cross multiply
    734,718.21x = 1,013,819.31 × 407,986.80
  4. Step 4: Simplify right side
    734,718.21x = 413,624,896,065.11
  5. Step 5: Solve for x
    x = 413,624,896,065.11/734,718.21
  6. Step 6: Final answer
    x = 562,970.80

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Double scale
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Similar ratio
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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.