Finding the Fourth Proportional to 812,013,735.91, 1,120,386,875.27 and 459,589,726.62
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Solution
The fourth proportional to 812,013,735.91, 1,120,386,875.27 and 459,589,726.62 is: 634,125,107.67
Step by Step Solution
- Step 1: Write the proportion equation
812,013,735.91 : 1,120,386,875.27 = 459,589,726.62 : x - Step 2: Convert to fraction form
812,013,735.91/1,120,386,875.27 = 459,589,726.62/x - Step 3: Cross multiply
812,013,735.91x = 1,120,386,875.27 × 459,589,726.62 - Step 4: Simplify right side
812,013,735.91x = 514,918,297,713,975,360 - Step 5: Solve for x
x = 514,918,297,713,975,360/812,013,735.91 - Step 6: Final answer
x = 634,125,107.67
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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.