Finding the Fourth Proportional to 1,243,199,589.60, 1,865,471,230.80 and 553,213,336.80
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Solution
The fourth proportional to 1,243,199,589.60, 1,865,471,230.80 and 553,213,336.80 is: 830,118,971.18
Step by Step Solution
- Step 1: Write the proportion equation
1,243,199,589.60 : 1,865,471,230.80 = 553,213,336.80 : x - Step 2: Convert to fraction form
1,243,199,589.60/1,865,471,230.80 = 553,213,336.80/x - Step 3: Cross multiply
1,243,199,589.60x = 1,865,471,230.80 × 553,213,336.80 - Step 4: Simplify right side
1,243,199,589.60x = 1,032,003,564,295,270,784 - Step 5: Solve for x
x = 1,032,003,564,295,270,784/1,243,199,589.60 - Step 6: Final answer
x = 830,118,971.18
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.