Home / 999,280.35-1,379,457.23-637,190.91

Finding the Fourth Proportional to 999,280.35, 1,379,457.23 and 637,190.91

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Solution

The fourth proportional to 999,280.35, 1,379,457.23 and 637,190.91 is: 879,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,280.35 : 1,379,457.23 = 637,190.91 : x
  2. Step 2: Convert to fraction form
    999,280.35/1,379,457.23 = 637,190.91/x
  3. Step 3: Cross multiply
    999,280.35x = 1,379,457.23 × 637,190.91
  4. Step 4: Simplify right side
    999,280.35x = 878,977,604,503.83
  5. Step 5: Solve for x
    x = 878,977,604,503.83/999,280.35
  6. Step 6: Final answer
    x = 879,610.62

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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.