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Finding the Fourth Proportional to 488,831.90, 732,664.65 and 438,676.70

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Solution

The fourth proportional to 488,831.90, 732,664.65 and 438,676.70 is: 657,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,831.90 : 732,664.65 = 438,676.70 : x
  2. Step 2: Convert to fraction form
    488,831.90/732,664.65 = 438,676.70/x
  3. Step 3: Cross multiply
    488,831.90x = 732,664.65 × 438,676.70
  4. Step 4: Simplify right side
    488,831.90x = 321,402,910,868.66
  5. Step 5: Solve for x
    x = 321,402,910,868.66/488,831.90
  6. Step 6: Final answer
    x = 657,491.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.