Home / 1,429,689.69-1,972,971.74-785,120.65

Finding the Fourth Proportional to 1,429,689.69, 1,972,971.74 and 785,120.65

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Solution

The fourth proportional to 1,429,689.69, 1,972,971.74 and 785,120.65 is: 1,083,466.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,689.69 : 1,972,971.74 = 785,120.65 : x
  2. Step 2: Convert to fraction form
    1,429,689.69/1,972,971.74 = 785,120.65/x
  3. Step 3: Cross multiply
    1,429,689.69x = 1,972,971.74 × 785,120.65
  4. Step 4: Simplify right side
    1,429,689.69x = 1,549,020,851,970.80
  5. Step 5: Solve for x
    x = 1,549,020,851,970.80/1,429,689.69
  6. Step 6: Final answer
    x = 1,083,466.48

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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.