Finding the Fourth Proportional to 1,379,217,781.54, 1,903,360,890.09 and 752,726,391.94
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Solution
The fourth proportional to 1,379,217,781.54, 1,903,360,890.09 and 752,726,391.94 is: 1,038,784,443.28
Step by Step Solution
- Step 1: Write the proportion equation
1,379,217,781.54 : 1,903,360,890.09 = 752,726,391.94 : x - Step 2: Convert to fraction form
1,379,217,781.54/1,903,360,890.09 = 752,726,391.94/x - Step 3: Cross multiply
1,379,217,781.54x = 1,903,360,890.09 × 752,726,391.94 - Step 4: Simplify right side
1,379,217,781.54x = 1,432,709,975,357,152,768 - Step 5: Solve for x
x = 1,432,709,975,357,152,768/1,379,217,781.54 - Step 6: Final answer
x = 1,038,784,443.28
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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.