Finding the Fourth Proportional to 817,763.48, 1,128,488.47 and 455,178.03
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Solution
The fourth proportional to 817,763.48, 1,128,488.47 and 455,178.03 is: 628,131.69
Step by Step Solution
- Step 1: Write the proportion equation
817,763.48 : 1,128,488.47 = 455,178.03 : x - Step 2: Convert to fraction form
817,763.48/1,128,488.47 = 455,178.03/x - Step 3: Cross multiply
817,763.48x = 1,128,488.47 × 455,178.03 - Step 4: Simplify right side
817,763.48x = 513,663,158,652.31 - Step 5: Solve for x
x = 513,663,158,652.31/817,763.48 - Step 6: Final answer
x = 628,131.69
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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.