Finding the Fourth Proportional to 1,223,785.24, 1,688,821.86 and 679,971.08
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Solution
The fourth proportional to 1,223,785.24, 1,688,821.86 and 679,971.08 is: 938,359.11
Step by Step Solution
- Step 1: Write the proportion equation
1,223,785.24 : 1,688,821.86 = 679,971.08 : x - Step 2: Convert to fraction form
1,223,785.24/1,688,821.86 = 679,971.08/x - Step 3: Cross multiply
1,223,785.24x = 1,688,821.86 × 679,971.08 - Step 4: Simplify right side
1,223,785.24x = 1,148,350,024,071.81 - Step 5: Solve for x
x = 1,148,350,024,071.81/1,223,785.24 - Step 6: Final answer
x = 938,359.11
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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.