Home / 515,820.24-711,883.08-289,466.64

Finding the Fourth Proportional to 515,820.24, 711,883.08 and 289,466.64

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Solution

The fourth proportional to 515,820.24, 711,883.08 and 289,466.64 is: 399,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,820.24 : 711,883.08 = 289,466.64 : x
  2. Step 2: Convert to fraction form
    515,820.24/711,883.08 = 289,466.64/x
  3. Step 3: Cross multiply
    515,820.24x = 711,883.08 × 289,466.64
  4. Step 4: Simplify right side
    515,820.24x = 206,066,403,240.45
  5. Step 5: Solve for x
    x = 206,066,403,240.45/515,820.24
  6. Step 6: Final answer
    x = 399,492.67

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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.