Home / 589,020.78-812,830.50-347,318.40

Finding the Fourth Proportional to 589,020.78, 812,830.50 and 347,318.40

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Solution

The fourth proportional to 589,020.78, 812,830.50 and 347,318.40 is: 479,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,020.78 : 812,830.50 = 347,318.40 : x
  2. Step 2: Convert to fraction form
    589,020.78/812,830.50 = 347,318.40/x
  3. Step 3: Cross multiply
    589,020.78x = 812,830.50 × 347,318.40
  4. Step 4: Simplify right side
    589,020.78x = 282,310,988,731.20
  5. Step 5: Solve for x
    x = 282,310,988,731.20/589,020.78
  6. Step 6: Final answer
    x = 479,288.67

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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.