Finding the Fourth Proportional to 687,298.99, 948,427.03 and 381,355.98
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Solution
The fourth proportional to 687,298.99, 948,427.03 and 381,355.98 is: 526,245.96
Step by Step Solution
- Step 1: Write the proportion equation
687,298.99 : 948,427.03 = 381,355.98 : x - Step 2: Convert to fraction form
687,298.99/948,427.03 = 381,355.98/x - Step 3: Cross multiply
687,298.99x = 948,427.03 × 381,355.98 - Step 4: Simplify right side
687,298.99x = 361,688,319,484.14 - Step 5: Solve for x
x = 361,688,319,484.14/687,298.99 - Step 6: Final answer
x = 526,245.96
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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.