Finding the Fourth Proportional to 386,828,678.79, 533,818,569.36 and 210,614,652.99
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Solution
The fourth proportional to 386,828,678.79, 533,818,569.36 and 210,614,652.99 is: 290,645,494.79
Step by Step Solution
- Step 1: Write the proportion equation
386,828,678.79 : 533,818,569.36 = 210,614,652.99 : x - Step 2: Convert to fraction form
386,828,678.79/533,818,569.36 = 210,614,652.99/x - Step 3: Cross multiply
386,828,678.79x = 533,818,569.36 × 210,614,652.99 - Step 4: Simplify right side
386,828,678.79x = 112,430,012,745,374,656 - Step 5: Solve for x
x = 112,430,012,745,374,656/386,828,678.79 - Step 6: Final answer
x = 290,645,494.79
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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.