Finding the Fourth Proportional to 1,319,699,831.04, 1,821,204,419.18 and 725,039,273.07
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Solution
The fourth proportional to 1,319,699,831.04, 1,821,204,419.18 and 725,039,273.07 is: 1,000,564,444.38
Step by Step Solution
- Step 1: Write the proportion equation
1,319,699,831.04 : 1,821,204,419.18 = 725,039,273.07 : x - Step 2: Convert to fraction form
1,319,699,831.04/1,821,204,419.18 = 725,039,273.07/x - Step 3: Cross multiply
1,319,699,831.04x = 1,821,204,419.18 × 725,039,273.07 - Step 4: Simplify right side
1,319,699,831.04x = 1,320,444,728,190,513,664 - Step 5: Solve for x
x = 1,320,444,728,190,513,664/1,319,699,831.04 - Step 6: Final answer
x = 1,000,564,444.38
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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.