Home / 683,815.37-943,637.65-397,312.90

Finding the Fourth Proportional to 683,815.37, 943,637.65 and 397,312.90

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Solution

The fourth proportional to 683,815.37, 943,637.65 and 397,312.90 is: 548,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,815.37 : 943,637.65 = 397,312.90 : x
  2. Step 2: Convert to fraction form
    683,815.37/943,637.65 = 397,312.90/x
  3. Step 3: Cross multiply
    683,815.37x = 943,637.65 × 397,312.90
  4. Step 4: Simplify right side
    683,815.37x = 374,919,407,918.31
  5. Step 5: Solve for x
    x = 374,919,407,918.31/683,815.37
  6. Step 6: Final answer
    x = 548,275.79

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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.