Home / 1,291,804.80-1,937,707.20-1,011,561.60

Finding the Fourth Proportional to 1,291,804.80, 1,937,707.20 and 1,011,561.60

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Solution

The fourth proportional to 1,291,804.80, 1,937,707.20 and 1,011,561.60 is: 1,517,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,804.80 : 1,937,707.20 = 1,011,561.60 : x
  2. Step 2: Convert to fraction form
    1,291,804.80/1,937,707.20 = 1,011,561.60/x
  3. Step 3: Cross multiply
    1,291,804.80x = 1,937,707.20 × 1,011,561.60
  4. Step 4: Simplify right side
    1,291,804.80x = 1,960,110,195,563.52
  5. Step 5: Solve for x
    x = 1,960,110,195,563.52/1,291,804.80
  6. Step 6: Final answer
    x = 1,517,342.40

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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.