Finding the Fourth Proportional to 1,415,688.84, 1,953,695.70 and 771,129.72
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Solution
The fourth proportional to 1,415,688.84, 1,953,695.70 and 771,129.72 is: 1,064,183.58
Step by Step Solution
- Step 1: Write the proportion equation
1,415,688.84 : 1,953,695.70 = 771,129.72 : x - Step 2: Convert to fraction form
1,415,688.84/1,953,695.70 = 771,129.72/x - Step 3: Cross multiply
1,415,688.84x = 1,953,695.70 × 771,129.72 - Step 4: Simplify right side
1,415,688.84x = 1,506,552,818,106.20 - Step 5: Solve for x
x = 1,506,552,818,106.20/1,415,688.84 - Step 6: Final answer
x = 1,064,183.58
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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.