Home / 1,261,276.80-1,893,081.60-630,643.20

Finding the Fourth Proportional to 1,261,276.80, 1,893,081.60 and 630,643.20

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Solution

The fourth proportional to 1,261,276.80, 1,893,081.60 and 630,643.20 is: 946,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,276.80 : 1,893,081.60 = 630,643.20 : x
  2. Step 2: Convert to fraction form
    1,261,276.80/1,893,081.60 = 630,643.20/x
  3. Step 3: Cross multiply
    1,261,276.80x = 1,893,081.60 × 630,643.20
  4. Step 4: Simplify right side
    1,261,276.80x = 1,193,859,038,085.12
  5. Step 5: Solve for x
    x = 1,193,859,038,085.12/1,261,276.80
  6. Step 6: Final answer
    x = 946,548.00

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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.