Home / 989,644.60-1,484,466.90-429,772.60

Finding the Fourth Proportional to 989,644.60, 1,484,466.90 and 429,772.60

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Solution

The fourth proportional to 989,644.60, 1,484,466.90 and 429,772.60 is: 644,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,644.60 : 1,484,466.90 = 429,772.60 : x
  2. Step 2: Convert to fraction form
    989,644.60/1,484,466.90 = 429,772.60/x
  3. Step 3: Cross multiply
    989,644.60x = 1,484,466.90 × 429,772.60
  4. Step 4: Simplify right side
    989,644.60x = 637,983,199,226.94
  5. Step 5: Solve for x
    x = 637,983,199,226.94/989,644.60
  6. Step 6: Final answer
    x = 644,658.90

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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.