Home / 1,075,430.80-1,485,424.20-788,496.40

Finding the Fourth Proportional to 1,075,430.80, 1,485,424.20 and 788,496.40

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Solution

The fourth proportional to 1,075,430.80, 1,485,424.20 and 788,496.40 is: 1,089,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075,430.80 : 1,485,424.20 = 788,496.40 : x
  2. Step 2: Convert to fraction form
    1,075,430.80/1,485,424.20 = 788,496.40/x
  3. Step 3: Cross multiply
    1,075,430.80x = 1,485,424.20 × 788,496.40
  4. Step 4: Simplify right side
    1,075,430.80x = 1,171,251,634,172.88
  5. Step 5: Solve for x
    x = 1,171,251,634,172.88/1,075,430.80
  6. Step 6: Final answer
    x = 1,089,099.95

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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.