Home / 443,927.40-665,939.70-429,930.60

Finding the Fourth Proportional to 443,927.40, 665,939.70 and 429,930.60

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Solution

The fourth proportional to 443,927.40, 665,939.70 and 429,930.60 is: 644,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,927.40 : 665,939.70 = 429,930.60 : x
  2. Step 2: Convert to fraction form
    443,927.40/665,939.70 = 429,930.60/x
  3. Step 3: Cross multiply
    443,927.40x = 665,939.70 × 429,930.60
  4. Step 4: Simplify right side
    443,927.40x = 286,307,854,784.82
  5. Step 5: Solve for x
    x = 286,307,854,784.82/443,927.40
  6. Step 6: Final answer
    x = 644,942.97

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1.5x scale

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.