Home / 778,817.40-1,167,419.70-423,079.80

Finding the Fourth Proportional to 778,817.40, 1,167,419.70 and 423,079.80

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Solution

The fourth proportional to 778,817.40, 1,167,419.70 and 423,079.80 is: 634,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,817.40 : 1,167,419.70 = 423,079.80 : x
  2. Step 2: Convert to fraction form
    778,817.40/1,167,419.70 = 423,079.80/x
  3. Step 3: Cross multiply
    778,817.40x = 1,167,419.70 × 423,079.80
  4. Step 4: Simplify right side
    778,817.40x = 493,911,693,192.06
  5. Step 5: Solve for x
    x = 493,911,693,192.06/778,817.40
  6. Step 6: Final answer
    x = 634,181.64

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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.