Home / 1,328,710.60-1,993,260.30-429,999.40

Finding the Fourth Proportional to 1,328,710.60, 1,993,260.30 and 429,999.40

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Solution

The fourth proportional to 1,328,710.60, 1,993,260.30 and 429,999.40 is: 645,062.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,710.60 : 1,993,260.30 = 429,999.40 : x
  2. Step 2: Convert to fraction form
    1,328,710.60/1,993,260.30 = 429,999.40/x
  3. Step 3: Cross multiply
    1,328,710.60x = 1,993,260.30 × 429,999.40
  4. Step 4: Simplify right side
    1,328,710.60x = 857,100,733,043.82
  5. Step 5: Solve for x
    x = 857,100,733,043.82/1,328,710.60
  6. Step 6: Final answer
    x = 645,062.01

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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.