Finding the Fourth Proportional to 787,968,031.20, 1,181,952,046.80 and 497,730,386.40
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Solution
The fourth proportional to 787,968,031.20, 1,181,952,046.80 and 497,730,386.40 is: 746,595,579.60
Step by Step Solution
- Step 1: Write the proportion equation
787,968,031.20 : 1,181,952,046.80 = 497,730,386.40 : x - Step 2: Convert to fraction form
787,968,031.20/1,181,952,046.80 = 497,730,386.40/x - Step 3: Cross multiply
787,968,031.20x = 1,181,952,046.80 × 497,730,386.40 - Step 4: Simplify right side
787,968,031.20x = 588,293,448,960,034,816 - Step 5: Solve for x
x = 588,293,448,960,034,816/787,968,031.20 - Step 6: Final answer
x = 746,595,579.60
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Double scale
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Similar ratio
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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.