Home / 656,386.34-905,981.69-427,513.96

Finding the Fourth Proportional to 656,386.34, 905,981.69 and 427,513.96

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Solution

The fourth proportional to 656,386.34, 905,981.69 and 427,513.96 is: 590,079.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,386.34 : 905,981.69 = 427,513.96 : x
  2. Step 2: Convert to fraction form
    656,386.34/905,981.69 = 427,513.96/x
  3. Step 3: Cross multiply
    656,386.34x = 905,981.69 × 427,513.96
  4. Step 4: Simplify right side
    656,386.34x = 387,319,819,979.39
  5. Step 5: Solve for x
    x = 387,319,819,979.39/656,386.34
  6. Step 6: Final answer
    x = 590,079.04

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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.