Finding the Fourth Proportional to 1,122,890,166.10, 1,549,484,438.46 and 621,088,149.58
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Solution
The fourth proportional to 1,122,890,166.10, 1,549,484,438.46 and 621,088,149.58 is: 857,044,127.50
Step by Step Solution
- Step 1: Write the proportion equation
1,122,890,166.10 : 1,549,484,438.46 = 621,088,149.58 : x - Step 2: Convert to fraction form
1,122,890,166.10/1,549,484,438.46 = 621,088,149.58/x - Step 3: Cross multiply
1,122,890,166.10x = 1,549,484,438.46 × 621,088,149.58 - Step 4: Simplify right side
1,122,890,166.10x = 962,366,422,686,126,848 - Step 5: Solve for x
x = 962,366,422,686,126,848/1,122,890,166.10 - Step 6: Final answer
x = 857,044,127.50
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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.