Home / 1,287,848.40-1,931,772.60-808,846.80

Finding the Fourth Proportional to 1,287,848.40, 1,931,772.60 and 808,846.80

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Solution

The fourth proportional to 1,287,848.40, 1,931,772.60 and 808,846.80 is: 1,213,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,848.40 : 1,931,772.60 = 808,846.80 : x
  2. Step 2: Convert to fraction form
    1,287,848.40/1,931,772.60 = 808,846.80/x
  3. Step 3: Cross multiply
    1,287,848.40x = 1,931,772.60 × 808,846.80
  4. Step 4: Simplify right side
    1,287,848.40x = 1,562,508,085,837.68
  5. Step 5: Solve for x
    x = 1,562,508,085,837.68/1,287,848.40
  6. Step 6: Final answer
    x = 1,213,270.20

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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.