Finding the Fourth Proportional to 984,516,386.68, 1,358,621,606.01 and 538,492,564.54
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Solution
The fourth proportional to 984,516,386.68, 1,358,621,606.01 and 538,492,564.54 is: 743,113,718.33
Step by Step Solution
- Step 1: Write the proportion equation
984,516,386.68 : 1,358,621,606.01 = 538,492,564.54 : x - Step 2: Convert to fraction form
984,516,386.68/1,358,621,606.01 = 538,492,564.54/x - Step 3: Cross multiply
984,516,386.68x = 1,358,621,606.01 × 538,492,564.54 - Step 4: Simplify right side
984,516,386.68x = 731,607,632,859,778,304 - Step 5: Solve for x
x = 731,607,632,859,778,304/984,516,386.68 - Step 6: Final answer
x = 743,113,718.33
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Double scale
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1.5x scale
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.