Finding the Fourth Proportional to 708,498.14, 977,678.59 and 398,447.08
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Solution
The fourth proportional to 708,498.14, 977,678.59 and 398,447.08 is: 549,829.50
Step by Step Solution
- Step 1: Write the proportion equation
708,498.14 : 977,678.59 = 398,447.08 : x - Step 2: Convert to fraction form
708,498.14/977,678.59 = 398,447.08/x - Step 3: Cross multiply
708,498.14x = 977,678.59 × 398,447.08 - Step 4: Simplify right side
708,498.14x = 389,553,179,364.02 - Step 5: Solve for x
x = 389,553,179,364.02/708,498.14 - Step 6: Final answer
x = 549,829.50
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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.