Finding the Fourth Proportional to 886,465,900.80, 1,329,698,851.20 and 272,970,410.40
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Solution
The fourth proportional to 886,465,900.80, 1,329,698,851.20 and 272,970,410.40 is: 409,455,615.60
Step by Step Solution
- Step 1: Write the proportion equation
886,465,900.80 : 1,329,698,851.20 = 272,970,410.40 : x - Step 2: Convert to fraction form
886,465,900.80/1,329,698,851.20 = 272,970,410.40/x - Step 3: Cross multiply
886,465,900.80x = 1,329,698,851.20 × 272,970,410.40 - Step 4: Simplify right side
886,465,900.80x = 362,968,441,120,472,512 - Step 5: Solve for x
x = 362,968,441,120,472,512/886,465,900.80 - Step 6: Final answer
x = 409,455,615.60
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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.