Home / 677,945.39-935,332.91-387,348.45

Finding the Fourth Proportional to 677,945.39, 935,332.91 and 387,348.45

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Solution

The fourth proportional to 677,945.39, 935,332.91 and 387,348.45 is: 534,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,945.39 : 935,332.91 = 387,348.45 : x
  2. Step 2: Convert to fraction form
    677,945.39/935,332.91 = 387,348.45/x
  3. Step 3: Cross multiply
    677,945.39x = 935,332.91 × 387,348.45
  4. Step 4: Simplify right side
    677,945.39x = 362,299,753,890.86
  5. Step 5: Solve for x
    x = 362,299,753,890.86/677,945.39
  6. Step 6: Final answer
    x = 534,408.46

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Double scale
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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.