Home / 692,001.80-1,038,002.70-407,400.20

Finding the Fourth Proportional to 692,001.80, 1,038,002.70 and 407,400.20

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Solution

The fourth proportional to 692,001.80, 1,038,002.70 and 407,400.20 is: 611,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,001.80 : 1,038,002.70 = 407,400.20 : x
  2. Step 2: Convert to fraction form
    692,001.80/1,038,002.70 = 407,400.20/x
  3. Step 3: Cross multiply
    692,001.80x = 1,038,002.70 × 407,400.20
  4. Step 4: Simplify right side
    692,001.80x = 422,882,507,580.54
  5. Step 5: Solve for x
    x = 422,882,507,580.54/692,001.80
  6. Step 6: Final answer
    x = 611,100.30

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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.