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Finding the Fourth Proportional to 630,011.96, 869,490.24 and 358,120.64

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Solution

The fourth proportional to 630,011.96, 869,490.24 and 358,120.64 is: 494,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,011.96 : 869,490.24 = 358,120.64 : x
  2. Step 2: Convert to fraction form
    630,011.96/869,490.24 = 358,120.64/x
  3. Step 3: Cross multiply
    630,011.96x = 869,490.24 × 358,120.64
  4. Step 4: Simplify right side
    630,011.96x = 311,382,401,222.55
  5. Step 5: Solve for x
    x = 311,382,401,222.55/630,011.96
  6. Step 6: Final answer
    x = 494,248.40

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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.