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Finding the Fourth Proportional to 1,319,752, 1,821,262.62 and 716,140

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Solution

The fourth proportional to 1,319,752, 1,821,262.62 and 716,140 is: 988,275.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,752 : 1,821,262.62 = 716,140 : x
  2. Step 2: Convert to fraction form
    1,319,752/1,821,262.62 = 716,140/x
  3. Step 3: Cross multiply
    1,319,752x = 1,821,262.62 × 716,140
  4. Step 4: Simplify right side
    1,319,752x = 1,304,279,012,686.80
  5. Step 5: Solve for x
    x = 1,304,279,012,686.80/1,319,752
  6. Step 6: Final answer
    x = 988,275.84

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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.