Finding the Fourth Proportional to 783,435,645.20, 1,175,153,467.80 and 553,853,133.20
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Solution
The fourth proportional to 783,435,645.20, 1,175,153,467.80 and 553,853,133.20 is: 830,779,699.80
Step by Step Solution
- Step 1: Write the proportion equation
783,435,645.20 : 1,175,153,467.80 = 553,853,133.20 : x - Step 2: Convert to fraction form
783,435,645.20/1,175,153,467.80 = 553,853,133.20/x - Step 3: Cross multiply
783,435,645.20x = 1,175,153,467.80 × 553,853,133.20 - Step 4: Simplify right side
783,435,645.20x = 650,862,430,131,875,328 - Step 5: Solve for x
x = 650,862,430,131,875,328/783,435,645.20 - Step 6: Final answer
x = 830,779,699.80
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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.