Finding the Fourth Proportional to 928,927.12, 1,281,970.14 and 521,158.12
Calculator
Solution
The fourth proportional to 928,927.12, 1,281,970.14 and 521,158.12 is: 719,226.66
Step by Step Solution
- Step 1: Write the proportion equation
928,927.12 : 1,281,970.14 = 521,158.12 : x - Step 2: Convert to fraction form
928,927.12/1,281,970.14 = 521,158.12/x - Step 3: Cross multiply
928,927.12x = 1,281,970.14 × 521,158.12 - Step 4: Simplify right side
928,927.12x = 668,109,148,058.54 - Step 5: Solve for x
x = 668,109,148,058.54/928,927.12 - Step 6: Final answer
x = 719,226.66
Related Problems
Find fourth proportional to 464,463.56, 640,985.07 and 260,579.06
Half scale
Find fourth proportional to 1,857,854.24, 2,563,940.28 and 1,042,316.24
Double scale
Find fourth proportional to 928,928.12, 1,281,971.52 and 521,159.12
Similar ratio
Find fourth proportional to 1,393,390.68, 1,922,955.21 and 781,737.18
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.