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Finding the Fourth Proportional to 658,818.40, 908,485.68 and 563,640.16

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Solution

The fourth proportional to 658,818.40, 908,485.68 and 563,640.16 is: 777,238.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,818.40 : 908,485.68 = 563,640.16 : x
  2. Step 2: Convert to fraction form
    658,818.40/908,485.68 = 563,640.16/x
  3. Step 3: Cross multiply
    658,818.40x = 908,485.68 × 563,640.16
  4. Step 4: Simplify right side
    658,818.40x = 512,059,014,032.91
  5. Step 5: Solve for x
    x = 512,059,014,032.91/658,818.40
  6. Step 6: Final answer
    x = 777,238.48

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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.