Finding the Fourth Proportional to 1,387,867.68, 2,081,802.24 and 390,595.68
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Solution
The fourth proportional to 1,387,867.68, 2,081,802.24 and 390,595.68 is: 585,893.72
Step by Step Solution
- Step 1: Write the proportion equation
1,387,867.68 : 2,081,802.24 = 390,595.68 : x - Step 2: Convert to fraction form
1,387,867.68/2,081,802.24 = 390,595.68/x - Step 3: Cross multiply
1,387,867.68x = 2,081,802.24 × 390,595.68 - Step 4: Simplify right side
1,387,867.68x = 813,142,961,558.32 - Step 5: Solve for x
x = 813,142,961,558.32/1,387,867.68 - Step 6: Final answer
x = 585,893.72
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1.5x scale
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.