Finding the Fourth Proportional to 563,981.32, 778,344.12 and 309,382.12
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Solution
The fourth proportional to 563,981.32, 778,344.12 and 309,382.12 is: 426,974.70
Step by Step Solution
- Step 1: Write the proportion equation
563,981.32 : 778,344.12 = 309,382.12 : x - Step 2: Convert to fraction form
563,981.32/778,344.12 = 309,382.12/x - Step 3: Cross multiply
563,981.32x = 778,344.12 × 309,382.12 - Step 4: Simplify right side
563,981.32x = 240,805,753,935.13 - Step 5: Solve for x
x = 240,805,753,935.13/563,981.32 - Step 6: Final answer
x = 426,974.70
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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.