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Finding the Fourth Proportional to 630,377.72, 869,904.02 and 343,897.73

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Solution

The fourth proportional to 630,377.72, 869,904.02 and 343,897.73 is: 474,569.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,377.72 : 869,904.02 = 343,897.73 : x
  2. Step 2: Convert to fraction form
    630,377.72/869,904.02 = 343,897.73/x
  3. Step 3: Cross multiply
    630,377.72x = 869,904.02 × 343,897.73
  4. Step 4: Simplify right side
    630,377.72x = 299,158,017,795.88
  5. Step 5: Solve for x
    x = 299,158,017,795.88/630,377.72
  6. Step 6: Final answer
    x = 474,569.47

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Double scale
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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.