Finding the Fourth Proportional to 1,574,653,432.90, 2,361,980,149.35 and 990,493,485.70
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Solution
The fourth proportional to 1,574,653,432.90, 2,361,980,149.35 and 990,493,485.70 is: 1,485,740,228.55
Step by Step Solution
- Step 1: Write the proportion equation
1,574,653,432.90 : 2,361,980,149.35 = 990,493,485.70 : x - Step 2: Convert to fraction form
1,574,653,432.90/2,361,980,149.35 = 990,493,485.70/x - Step 3: Cross multiply
1,574,653,432.90x = 2,361,980,149.35 × 990,493,485.70 - Step 4: Simplify right side
1,574,653,432.90x = 2,339,525,951,283,888,128 - Step 5: Solve for x
x = 2,339,525,951,283,888,128/1,574,653,432.90 - Step 6: Final answer
x = 1,485,740,228.55
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Double scale
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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.