Home / 778,748.65-1,168,117.72-419,088.74

Finding the Fourth Proportional to 778,748.65, 1,168,117.72 and 419,088.74

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Solution

The fourth proportional to 778,748.65, 1,168,117.72 and 419,088.74 is: 628,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,748.65 : 1,168,117.72 = 419,088.74 : x
  2. Step 2: Convert to fraction form
    778,748.65/1,168,117.72 = 419,088.74/x
  3. Step 3: Cross multiply
    778,748.65x = 1,168,117.72 × 419,088.74
  4. Step 4: Simplify right side
    778,748.65x = 489,544,978,915.54
  5. Step 5: Solve for x
    x = 489,544,978,915.54/778,748.65
  6. Step 6: Final answer
    x = 628,630.28

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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.