Finding the Fourth Proportional to 999,631.55, 1,378,056.74 and 712,653.41
Calculator
Solution
The fourth proportional to 999,631.55, 1,378,056.74 and 712,653.41 is: 982,438.81
Step by Step Solution
- Step 1: Write the proportion equation
999,631.55 : 1,378,056.74 = 712,653.41 : x - Step 2: Convert to fraction form
999,631.55/1,378,056.74 = 712,653.41/x - Step 3: Cross multiply
999,631.55x = 1,378,056.74 × 712,653.41 - Step 4: Simplify right side
999,631.55x = 982,076,834,934.48 - Step 5: Solve for x
x = 982,076,834,934.48/999,631.55 - Step 6: Final answer
x = 982,438.81
Related Problems
Find fourth proportional to 499,815.78, 689,028.37 and 356,326.71
Half scale
Find fourth proportional to 1,999,263.10, 2,756,113.48 and 1,425,306.82
Double scale
Find fourth proportional to 999,632.55, 1,378,058.12 and 712,654.41
Similar ratio
Find fourth proportional to 1,499,447.33, 2,067,085.11 and 1,068,980.12
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.