Finding the Fourth Proportional to 1,138,908.24, 1,698,317.18 and 1,128,655.53
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Solution
The fourth proportional to 1,138,908.24, 1,698,317.18 and 1,128,655.53 is: 1,683,028.54
Step by Step Solution
- Step 1: Write the proportion equation
1,138,908.24 : 1,698,317.18 = 1,128,655.53 : x - Step 2: Convert to fraction form
1,138,908.24/1,698,317.18 = 1,128,655.53/x - Step 3: Cross multiply
1,138,908.24x = 1,698,317.18 × 1,128,655.53 - Step 4: Simplify right side
1,138,908.24x = 1,916,815,071,257.73 - Step 5: Solve for x
x = 1,916,815,071,257.73/1,138,908.24 - Step 6: Final answer
x = 1,683,028.54
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.