Home / 570,286.12-786,985.32-315,631.84

Finding the Fourth Proportional to 570,286.12, 786,985.32 and 315,631.84

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Solution

The fourth proportional to 570,286.12, 786,985.32 and 315,631.84 is: 435,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,286.12 : 786,985.32 = 315,631.84 : x
  2. Step 2: Convert to fraction form
    570,286.12/786,985.32 = 315,631.84/x
  3. Step 3: Cross multiply
    570,286.12x = 786,985.32 × 315,631.84
  4. Step 4: Simplify right side
    570,286.12x = 248,397,624,604.59
  5. Step 5: Solve for x
    x = 248,397,624,604.59/570,286.12
  6. Step 6: Final answer
    x = 435,566.67

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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.