Finding the Fourth Proportional to 7,742,212.68, 10,681,184.70 and 4,478,421.36
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Solution
The fourth proportional to 7,742,212.68, 10,681,184.70 and 4,478,421.36 is: 6,178,446.35
Step by Step Solution
- Step 1: Write the proportion equation
7,742,212.68 : 10,681,184.70 = 4,478,421.36 : x - Step 2: Convert to fraction form
7,742,212.68/10,681,184.70 = 4,478,421.36/x - Step 3: Cross multiply
7,742,212.68x = 10,681,184.70 × 4,478,421.36 - Step 4: Simplify right side
7,742,212.68x = 47,834,845,710,585.20 - Step 5: Solve for x
x = 47,834,845,710,585.20/7,742,212.68 - Step 6: Final answer
x = 6,178,446.35
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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.