Home / 778,927.20-1,168,304.40-638,440.80

Finding the Fourth Proportional to 778,927.20, 1,168,304.40 and 638,440.80

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Solution

The fourth proportional to 778,927.20, 1,168,304.40 and 638,440.80 is: 957,590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,927.20 : 1,168,304.40 = 638,440.80 : x
  2. Step 2: Convert to fraction form
    778,927.20/1,168,304.40 = 638,440.80/x
  3. Step 3: Cross multiply
    778,927.20x = 1,168,304.40 × 638,440.80
  4. Step 4: Simplify right side
    778,927.20x = 745,893,195,779.52
  5. Step 5: Solve for x
    x = 745,893,195,779.52/778,927.20
  6. Step 6: Final answer
    x = 957,590.38

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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.