Finding the Fourth Proportional to 936,487,427.18, 1,292,432,011.36 and 518,930,690.54
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Solution
The fourth proportional to 936,487,427.18, 1,292,432,011.36 and 518,930,690.54 is: 716,168,329.29
Step by Step Solution
- Step 1: Write the proportion equation
936,487,427.18 : 1,292,432,011.36 = 518,930,690.54 : x - Step 2: Convert to fraction form
936,487,427.18/1,292,432,011.36 = 518,930,690.54/x - Step 3: Cross multiply
936,487,427.18x = 1,292,432,011.36 × 518,930,690.54 - Step 4: Simplify right side
936,487,427.18x = 670,682,636,123,286,528 - Step 5: Solve for x
x = 670,682,636,123,286,528/936,487,427.18 - Step 6: Final answer
x = 716,168,329.29
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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.