Home / 630,171.51-869,711.42-358,280.43

Finding the Fourth Proportional to 630,171.51, 869,711.42 and 358,280.43

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Solution

The fourth proportional to 630,171.51, 869,711.42 and 358,280.43 is: 494,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,171.51 : 869,711.42 = 358,280.43 : x
  2. Step 2: Convert to fraction form
    630,171.51/869,711.42 = 358,280.43/x
  3. Step 3: Cross multiply
    630,171.51x = 869,711.42 × 358,280.43
  4. Step 4: Simplify right side
    630,171.51x = 311,600,581,533.51
  5. Step 5: Solve for x
    x = 311,600,581,533.51/630,171.51
  6. Step 6: Final answer
    x = 494,469.48

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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.