Home / 1,431,640.65-1,975,676.93-778,267.91

Finding the Fourth Proportional to 1,431,640.65, 1,975,676.93 and 778,267.91

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Solution

The fourth proportional to 1,431,640.65, 1,975,676.93 and 778,267.91 is: 1,074,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,640.65 : 1,975,676.93 = 778,267.91 : x
  2. Step 2: Convert to fraction form
    1,431,640.65/1,975,676.93 = 778,267.91/x
  3. Step 3: Cross multiply
    1,431,640.65x = 1,975,676.93 × 778,267.91
  4. Step 4: Simplify right side
    1,431,640.65x = 1,537,605,959,112.67
  5. Step 5: Solve for x
    x = 1,537,605,959,112.67/1,431,640.65
  6. Step 6: Final answer
    x = 1,074,016.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.