Home / 831,525.40-1,247,288.10-299,063.80

Finding the Fourth Proportional to 831,525.40, 1,247,288.10 and 299,063.80

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Solution

The fourth proportional to 831,525.40, 1,247,288.10 and 299,063.80 is: 448,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,525.40 : 1,247,288.10 = 299,063.80 : x
  2. Step 2: Convert to fraction form
    831,525.40/1,247,288.10 = 299,063.80/x
  3. Step 3: Cross multiply
    831,525.40x = 1,247,288.10 × 299,063.80
  4. Step 4: Simplify right side
    831,525.40x = 373,018,718,880.78
  5. Step 5: Solve for x
    x = 373,018,718,880.78/831,525.40
  6. Step 6: Final answer
    x = 448,595.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.