Finding the Fourth Proportional to 668,783,831.76, 922,810,866.08 and 386,552,601.99
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Solution
The fourth proportional to 668,783,831.76, 922,810,866.08 and 386,552,601.99 is: 533,378,536.51
Step by Step Solution
- Step 1: Write the proportion equation
668,783,831.76 : 922,810,866.08 = 386,552,601.99 : x - Step 2: Convert to fraction form
668,783,831.76/922,810,866.08 = 386,552,601.99/x - Step 3: Cross multiply
668,783,831.76x = 922,810,866.08 × 386,552,601.99 - Step 4: Simplify right side
668,783,831.76x = 356,714,941,425,936,704 - Step 5: Solve for x
x = 356,714,941,425,936,704/668,783,831.76 - Step 6: Final answer
x = 533,378,536.51
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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.