Home / 829,989.78-1,145,370.34-507,676.20

Finding the Fourth Proportional to 829,989.78, 1,145,370.34 and 507,676.20

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Solution

The fourth proportional to 829,989.78, 1,145,370.34 and 507,676.20 is: 700,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,989.78 : 1,145,370.34 = 507,676.20 : x
  2. Step 2: Convert to fraction form
    829,989.78/1,145,370.34 = 507,676.20/x
  3. Step 3: Cross multiply
    829,989.78x = 1,145,370.34 × 507,676.20
  4. Step 4: Simplify right side
    829,989.78x = 581,477,261,803.91
  5. Step 5: Solve for x
    x = 581,477,261,803.91/829,989.78
  6. Step 6: Final answer
    x = 700,583.64

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Double scale
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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.