Finding the Fourth Proportional to 989,845,818.40, 1,484,768,727.60 and 974,540,317.60
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Solution
The fourth proportional to 989,845,818.40, 1,484,768,727.60 and 974,540,317.60 is: 1,461,810,476.40
Step by Step Solution
- Step 1: Write the proportion equation
989,845,818.40 : 1,484,768,727.60 = 974,540,317.60 : x - Step 2: Convert to fraction form
989,845,818.40/1,484,768,727.60 = 974,540,317.60/x - Step 3: Cross multiply
989,845,818.40x = 1,484,768,727.60 × 974,540,317.60 - Step 4: Simplify right side
989,845,818.40x = 1,446,966,987,357,851,904 - Step 5: Solve for x
x = 1,446,966,987,357,851,904/989,845,818.40 - Step 6: Final answer
x = 1,461,810,476.40
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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.