Home / 656,509.20-985,152.60-478,568.40

Finding the Fourth Proportional to 656,509.20, 985,152.60 and 478,568.40

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Solution

The fourth proportional to 656,509.20, 985,152.60 and 478,568.40 is: 718,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,509.20 : 985,152.60 = 478,568.40 : x
  2. Step 2: Convert to fraction form
    656,509.20/985,152.60 = 478,568.40/x
  3. Step 3: Cross multiply
    656,509.20x = 985,152.60 × 478,568.40
  4. Step 4: Simplify right side
    656,509.20x = 471,462,903,537.84
  5. Step 5: Solve for x
    x = 471,462,903,537.84/656,509.20
  6. Step 6: Final answer
    x = 718,136.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.