Finding the Fourth Proportional to 7,919,897.81, 10,929,458.99 and 4,298,225.81
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Solution
The fourth proportional to 7,919,897.81, 10,929,458.99 and 4,298,225.81 is: 5,931,551.62
Step by Step Solution
- Step 1: Write the proportion equation
7,919,897.81 : 10,929,458.99 = 4,298,225.81 : x - Step 2: Convert to fraction form
7,919,897.81/10,929,458.99 = 4,298,225.81/x - Step 3: Cross multiply
7,919,897.81x = 10,929,458.99 × 4,298,225.81 - Step 4: Simplify right side
7,919,897.81x = 46,977,282,725,987.05 - Step 5: Solve for x
x = 46,977,282,725,987.05/7,919,897.81 - Step 6: Final answer
x = 5,931,551.62
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1.5x scale
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.