Finding the Fourth Proportional to 645,386.24, 890,564.80 and 358,860.08
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Solution
The fourth proportional to 645,386.24, 890,564.80 and 358,860.08 is: 495,188.98
Step by Step Solution
- Step 1: Write the proportion equation
645,386.24 : 890,564.80 = 358,860.08 : x - Step 2: Convert to fraction form
645,386.24/890,564.80 = 358,860.08/x - Step 3: Cross multiply
645,386.24x = 890,564.80 × 358,860.08 - Step 4: Simplify right side
645,386.24x = 319,588,155,373.18 - Step 5: Solve for x
x = 319,588,155,373.18/645,386.24 - Step 6: Final answer
x = 495,188.98
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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.