Finding the Fourth Proportional to 817,419.84, 1,226,128.56 and 256,498.08
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Solution
The fourth proportional to 817,419.84, 1,226,128.56 and 256,498.08 is: 384,746.74
Step by Step Solution
- Step 1: Write the proportion equation
817,419.84 : 1,226,128.56 = 256,498.08 : x - Step 2: Convert to fraction form
817,419.84/1,226,128.56 = 256,498.08/x - Step 3: Cross multiply
817,419.84x = 1,226,128.56 × 256,498.08 - Step 4: Simplify right side
817,419.84x = 314,499,621,473.17 - Step 5: Solve for x
x = 314,499,621,473.17/817,419.84 - Step 6: Final answer
x = 384,746.74
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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.