Finding the Fourth Proportional to 2,987,298.48, 4,122,820.20 and 1,698,331.74
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Solution
The fourth proportional to 2,987,298.48, 4,122,820.20 and 1,698,331.74 is: 2,343,895.81
Step by Step Solution
- Step 1: Write the proportion equation
2,987,298.48 : 4,122,820.20 = 1,698,331.74 : x - Step 2: Convert to fraction form
2,987,298.48/4,122,820.20 = 1,698,331.74/x - Step 3: Cross multiply
2,987,298.48x = 4,122,820.20 × 1,698,331.74 - Step 4: Simplify right side
2,987,298.48x = 7,001,916,403,973.15 - Step 5: Solve for x
x = 7,001,916,403,973.15/2,987,298.48 - Step 6: Final answer
x = 2,343,895.81
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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.