Finding the Fourth Proportional to 9,780,390.10, 14,656,588.35 and 7,201,479.70
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Solution
The fourth proportional to 9,780,390.10, 14,656,588.35 and 7,201,479.70 is: 10,791,913.45
Step by Step Solution
- Step 1: Write the proportion equation
9,780,390.10 : 14,656,588.35 = 7,201,479.70 : x - Step 2: Convert to fraction form
9,780,390.10/14,656,588.35 = 7,201,479.70/x - Step 3: Cross multiply
9,780,390.10x = 14,656,588.35 × 7,201,479.70 - Step 4: Simplify right side
9,780,390.10x = 105,549,123,473,781.50 - Step 5: Solve for x
x = 105,549,123,473,781.50/9,780,390.10 - Step 6: Final answer
x = 10,791,913.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.