Finding the Fourth Proportional to 916,937,417.20, 1,375,406,125.80 and 832,284,770.80
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Solution
The fourth proportional to 916,937,417.20, 1,375,406,125.80 and 832,284,770.80 is: 1,248,427,156.20
Step by Step Solution
- Step 1: Write the proportion equation
916,937,417.20 : 1,375,406,125.80 = 832,284,770.80 : x - Step 2: Convert to fraction form
916,937,417.20/1,375,406,125.80 = 832,284,770.80/x - Step 3: Cross multiply
916,937,417.20x = 1,375,406,125.80 × 832,284,770.80 - Step 4: Simplify right side
916,937,417.20x = 1,144,729,572,168,368,896 - Step 5: Solve for x
x = 1,144,729,572,168,368,896/916,937,417.20 - Step 6: Final answer
x = 1,248,427,156.20
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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.