Finding the Fourth Proportional to 1,423,317.48, 1,964,160.68 and 778,728.40
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Solution
The fourth proportional to 1,423,317.48, 1,964,160.68 and 778,728.40 is: 1,074,635.65
Step by Step Solution
- Step 1: Write the proportion equation
1,423,317.48 : 1,964,160.68 = 778,728.40 : x - Step 2: Convert to fraction form
1,423,317.48/1,964,160.68 = 778,728.40/x - Step 3: Cross multiply
1,423,317.48x = 1,964,160.68 × 778,728.40 - Step 4: Simplify right side
1,423,317.48x = 1,529,547,703,679.31 - Step 5: Solve for x
x = 1,529,547,703,679.31/1,423,317.48 - Step 6: Final answer
x = 1,074,635.65
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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.