Finding the Fourth Proportional to 346,642,430.28, 478,087,624.80 and 304,736,895.48
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Solution
The fourth proportional to 346,642,430.28, 478,087,624.80 and 304,736,895.48 is: 420,291,706.45
Step by Step Solution
- Step 1: Write the proportion equation
346,642,430.28 : 478,087,624.80 = 304,736,895.48 : x - Step 2: Convert to fraction form
346,642,430.28/478,087,624.80 = 304,736,895.48/x - Step 3: Cross multiply
346,642,430.28x = 478,087,624.80 × 304,736,895.48 - Step 4: Simplify right side
346,642,430.28x = 145,690,938,548,959,072 - Step 5: Solve for x
x = 145,690,938,548,959,072/346,642,430.28 - Step 6: Final answer
x = 420,291,706.45
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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.