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Finding the Fourth Proportional to 641,710.77, 884,918.57 and 426,859.89

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Solution

The fourth proportional to 641,710.77, 884,918.57 and 426,859.89 is: 588,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,710.77 : 884,918.57 = 426,859.89 : x
  2. Step 2: Convert to fraction form
    641,710.77/884,918.57 = 426,859.89/x
  3. Step 3: Cross multiply
    641,710.77x = 884,918.57 × 426,859.89
  4. Step 4: Simplify right side
    641,710.77x = 377,736,241,314.86
  5. Step 5: Solve for x
    x = 377,736,241,314.86/641,710.77
  6. Step 6: Final answer
    x = 588,639.40

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1.5x scale

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.