Finding the Fourth Proportional to 570,990.25, 787,992.36 and 316,341.44
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Solution
The fourth proportional to 570,990.25, 787,992.36 and 316,341.44 is: 436,565.49
Step by Step Solution
- Step 1: Write the proportion equation
570,990.25 : 787,992.36 = 316,341.44 : x - Step 2: Convert to fraction form
570,990.25/787,992.36 = 316,341.44/x - Step 3: Cross multiply
570,990.25x = 787,992.36 × 316,341.44 - Step 4: Simplify right side
570,990.25x = 249,274,637,871.40 - Step 5: Solve for x
x = 249,274,637,871.40/570,990.25 - Step 6: Final answer
x = 436,565.49
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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.