Home / 913,615.20-1,370,422.80-407,980.80

Finding the Fourth Proportional to 913,615.20, 1,370,422.80 and 407,980.80

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Solution

The fourth proportional to 913,615.20, 1,370,422.80 and 407,980.80 is: 611,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,615.20 : 1,370,422.80 = 407,980.80 : x
  2. Step 2: Convert to fraction form
    913,615.20/1,370,422.80 = 407,980.80/x
  3. Step 3: Cross multiply
    913,615.20x = 1,370,422.80 × 407,980.80
  4. Step 4: Simplify right side
    913,615.20x = 559,106,190,282.24
  5. Step 5: Solve for x
    x = 559,106,190,282.24/913,615.20
  6. Step 6: Final answer
    x = 611,971.20

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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.