Finding the Fourth Proportional to 989,845,809.90, 1,484,768,714.85 and 974,540,309.10
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Solution
The fourth proportional to 989,845,809.90, 1,484,768,714.85 and 974,540,309.10 is: 1,461,810,463.65
Step by Step Solution
- Step 1: Write the proportion equation
989,845,809.90 : 1,484,768,714.85 = 974,540,309.10 : x - Step 2: Convert to fraction form
989,845,809.90/1,484,768,714.85 = 974,540,309.10/x - Step 3: Cross multiply
989,845,809.90x = 1,484,768,714.85 × 974,540,309.10 - Step 4: Simplify right side
989,845,809.90x = 1,446,966,962,311,928,576 - Step 5: Solve for x
x = 1,446,966,962,311,928,576/989,845,809.90 - Step 6: Final answer
x = 1,461,810,463.65
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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.