Finding the Fourth Proportional to 398,779,787.80, 598,169,681.70 and 183,788,939.80
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Solution
The fourth proportional to 398,779,787.80, 598,169,681.70 and 183,788,939.80 is: 275,683,409.70
Step by Step Solution
- Step 1: Write the proportion equation
398,779,787.80 : 598,169,681.70 = 183,788,939.80 : x - Step 2: Convert to fraction form
398,779,787.80/598,169,681.70 = 183,788,939.80/x - Step 3: Cross multiply
398,779,787.80x = 598,169,681.70 × 183,788,939.80 - Step 4: Simplify right side
398,779,787.80x = 109,936,971,620,146,480 - Step 5: Solve for x
x = 109,936,971,620,146,480/398,779,787.80 - Step 6: Final answer
x = 275,683,409.70
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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.