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Finding the Fourth Proportional to 630,171.63, 869,711.58 and 358,280.55

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Solution

The fourth proportional to 630,171.63, 869,711.58 and 358,280.55 is: 494,469.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,171.63 : 869,711.58 = 358,280.55 : x
  2. Step 2: Convert to fraction form
    630,171.63/869,711.58 = 358,280.55/x
  3. Step 3: Cross multiply
    630,171.63x = 869,711.58 × 358,280.55
  4. Step 4: Simplify right side
    630,171.63x = 311,600,743,223.77
  5. Step 5: Solve for x
    x = 311,600,743,223.77/630,171.63
  6. Step 6: Final answer
    x = 494,469.65

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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.