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Finding the Fourth Proportional to 604,980.30, 905,190.37 and 360,918.80

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Solution

The fourth proportional to 604,980.30, 905,190.37 and 360,918.80 is: 540,017.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,980.30 : 905,190.37 = 360,918.80 : x
  2. Step 2: Convert to fraction form
    604,980.30/905,190.37 = 360,918.80/x
  3. Step 3: Cross multiply
    604,980.30x = 905,190.37 × 360,918.80
  4. Step 4: Simplify right side
    604,980.30x = 326,700,216,683.71
  5. Step 5: Solve for x
    x = 326,700,216,683.71/604,980.30
  6. Step 6: Final answer
    x = 540,017.94

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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.