Finding the Fourth Proportional to 1,455,830.70, 2,183,746.05 and 1,390,512.30
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Solution
The fourth proportional to 1,455,830.70, 2,183,746.05 and 1,390,512.30 is: 2,085,768.45
Step by Step Solution
- Step 1: Write the proportion equation
1,455,830.70 : 2,183,746.05 = 1,390,512.30 : x - Step 2: Convert to fraction form
1,455,830.70/2,183,746.05 = 1,390,512.30/x - Step 3: Cross multiply
1,455,830.70x = 2,183,746.05 × 1,390,512.30 - Step 4: Simplify right side
1,455,830.70x = 3,036,525,742,601.42 - Step 5: Solve for x
x = 3,036,525,742,601.42/1,455,830.70 - Step 6: Final answer
x = 2,085,768.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.