Finding the Fourth Proportional to 785,824,412.80, 1,178,740,701.60 and 203,517,875.20
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Solution
The fourth proportional to 785,824,412.80, 1,178,740,701.60 and 203,517,875.20 is: 305,277,870.09
Step by Step Solution
- Step 1: Write the proportion equation
785,824,412.80 : 1,178,740,701.60 = 203,517,875.20 : x - Step 2: Convert to fraction form
785,824,412.80/1,178,740,701.60 = 203,517,875.20/x - Step 3: Cross multiply
785,824,412.80x = 1,178,740,701.60 × 203,517,875.20 - Step 4: Simplify right side
785,824,412.80x = 239,894,803,001,389,216 - Step 5: Solve for x
x = 239,894,803,001,389,216/785,824,412.80 - Step 6: Final answer
x = 305,277,870.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.