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Finding the Fourth Proportional to 586,627.20, 809,544.60 and 318,355.20

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Solution

The fourth proportional to 586,627.20, 809,544.60 and 318,355.20 is: 439,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,627.20 : 809,544.60 = 318,355.20 : x
  2. Step 2: Convert to fraction form
    586,627.20/809,544.60 = 318,355.20/x
  3. Step 3: Cross multiply
    586,627.20x = 809,544.60 × 318,355.20
  4. Step 4: Simplify right side
    586,627.20x = 257,722,733,041.92
  5. Step 5: Solve for x
    x = 257,722,733,041.92/586,627.20
  6. Step 6: Final answer
    x = 439,329.67

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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.