Finding the Fourth Proportional to 779,831.80, 1,169,747.70 and 425,537.80
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Solution
The fourth proportional to 779,831.80, 1,169,747.70 and 425,537.80 is: 638,306.70
Step by Step Solution
- Step 1: Write the proportion equation
779,831.80 : 1,169,747.70 = 425,537.80 : x - Step 2: Convert to fraction form
779,831.80/1,169,747.70 = 425,537.80/x - Step 3: Cross multiply
779,831.80x = 1,169,747.70 × 425,537.80 - Step 4: Simplify right side
779,831.80x = 497,771,862,813.06 - Step 5: Solve for x
x = 497,771,862,813.06/779,831.80 - Step 6: Final answer
x = 638,306.70
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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.