Home / 919,478.10-1,379,203.28-413,681.89

Finding the Fourth Proportional to 919,478.10, 1,379,203.28 and 413,681.89

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Solution

The fourth proportional to 919,478.10, 1,379,203.28 and 413,681.89 is: 620,516.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,478.10 : 1,379,203.28 = 413,681.89 : x
  2. Step 2: Convert to fraction form
    919,478.10/1,379,203.28 = 413,681.89/x
  3. Step 3: Cross multiply
    919,478.10x = 1,379,203.28 × 413,681.89
  4. Step 4: Simplify right side
    919,478.10x = 570,551,417,496.19
  5. Step 5: Solve for x
    x = 570,551,417,496.19/919,478.10
  6. Step 6: Final answer
    x = 620,516.59

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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.