Finding the Fourth Proportional to 944,486,191.31, 1,303,395,471.45 and 521,099,831.21
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Solution
The fourth proportional to 944,486,191.31, 1,303,395,471.45 and 521,099,831.21 is: 719,120,264.99
Step by Step Solution
- Step 1: Write the proportion equation
944,486,191.31 : 1,303,395,471.45 = 521,099,831.21 : x - Step 2: Convert to fraction form
944,486,191.31/1,303,395,471.45 = 521,099,831.21/x - Step 3: Cross multiply
944,486,191.31x = 1,303,395,471.45 × 521,099,831.21 - Step 4: Simplify right side
944,486,191.31x = 679,199,160,165,956,352 - Step 5: Solve for x
x = 679,199,160,165,956,352/944,486,191.31 - Step 6: Final answer
x = 719,120,264.99
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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.