Home / 648,210.60-969,983.10-438,258.60

Finding the Fourth Proportional to 648,210.60, 969,983.10 and 438,258.60

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Solution

The fourth proportional to 648,210.60, 969,983.10 and 438,258.60 is: 655,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,210.60 : 969,983.10 = 438,258.60 : x
  2. Step 2: Convert to fraction form
    648,210.60/969,983.10 = 438,258.60/x
  3. Step 3: Cross multiply
    648,210.60x = 969,983.10 × 438,258.60
  4. Step 4: Simplify right side
    648,210.60x = 425,103,435,429.66
  5. Step 5: Solve for x
    x = 425,103,435,429.66/648,210.60
  6. Step 6: Final answer
    x = 655,810.68

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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.