Home / 1,293,145.60-1,939,718.40-820,364.80

Finding the Fourth Proportional to 1,293,145.60, 1,939,718.40 and 820,364.80

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Solution

The fourth proportional to 1,293,145.60, 1,939,718.40 and 820,364.80 is: 1,230,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,145.60 : 1,939,718.40 = 820,364.80 : x
  2. Step 2: Convert to fraction form
    1,293,145.60/1,939,718.40 = 820,364.80/x
  3. Step 3: Cross multiply
    1,293,145.60x = 1,939,718.40 × 820,364.80
  4. Step 4: Simplify right side
    1,293,145.60x = 1,591,276,697,272.32
  5. Step 5: Solve for x
    x = 1,591,276,697,272.32/1,293,145.60
  6. Step 6: Final answer
    x = 1,230,547.20

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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.