Home / 439,368.40-658,534.20-328,430.80

Finding the Fourth Proportional to 439,368.40, 658,534.20 and 328,430.80

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Solution

The fourth proportional to 439,368.40, 658,534.20 and 328,430.80 is: 492,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,368.40 : 658,534.20 = 328,430.80 : x
  2. Step 2: Convert to fraction form
    439,368.40/658,534.20 = 328,430.80/x
  3. Step 3: Cross multiply
    439,368.40x = 658,534.20 × 328,430.80
  4. Step 4: Simplify right side
    439,368.40x = 216,282,914,133.36
  5. Step 5: Solve for x
    x = 216,282,914,133.36/439,368.40
  6. Step 6: Final answer
    x = 492,258.69

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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.