Finding the Fourth Proportional to 1,165,402,439.80, 1,748,103,659.70 and 798,070,420.60
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Solution
The fourth proportional to 1,165,402,439.80, 1,748,103,659.70 and 798,070,420.60 is: 1,197,105,630.90
Step by Step Solution
- Step 1: Write the proportion equation
1,165,402,439.80 : 1,748,103,659.70 = 798,070,420.60 : x - Step 2: Convert to fraction form
1,165,402,439.80/1,748,103,659.70 = 798,070,420.60/x - Step 3: Cross multiply
1,165,402,439.80x = 1,748,103,659.70 × 798,070,420.60 - Step 4: Simplify right side
1,165,402,439.80x = 1,395,109,822,949,178,368 - Step 5: Solve for x
x = 1,395,109,822,949,178,368/1,165,402,439.80 - Step 6: Final answer
x = 1,197,105,630.90
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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.