Home / 1,290,343.02-1,780,572.51-717,348.30

Finding the Fourth Proportional to 1,290,343.02, 1,780,572.51 and 717,348.30

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Solution

The fourth proportional to 1,290,343.02, 1,780,572.51 and 717,348.30 is: 989,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,343.02 : 1,780,572.51 = 717,348.30 : x
  2. Step 2: Convert to fraction form
    1,290,343.02/1,780,572.51 = 717,348.30/x
  3. Step 3: Cross multiply
    1,290,343.02x = 1,780,572.51 × 717,348.30
  4. Step 4: Simplify right side
    1,290,343.02x = 1,277,290,663,075.23
  5. Step 5: Solve for x
    x = 1,277,290,663,075.23/1,290,343.02
  6. Step 6: Final answer
    x = 989,884.58

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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.