Finding the Fourth Proportional to 865,192,737.42, 1,193,959,378.04 and 468,712,890.70
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Solution
The fourth proportional to 865,192,737.42, 1,193,959,378.04 and 468,712,890.70 is: 646,820,213.87
Step by Step Solution
- Step 1: Write the proportion equation
865,192,737.42 : 1,193,959,378.04 = 468,712,890.70 : x - Step 2: Convert to fraction form
865,192,737.42/1,193,959,378.04 = 468,712,890.70/x - Step 3: Cross multiply
865,192,737.42x = 1,193,959,378.04 × 468,712,890.70 - Step 4: Simplify right side
865,192,737.42x = 559,624,151,454,174,080 - Step 5: Solve for x
x = 559,624,151,454,174,080/865,192,737.42 - Step 6: Final answer
x = 646,820,213.87
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1.5x scale
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.