Home / 448,719.40-617,973.06-438,921.64

Finding the Fourth Proportional to 448,719.40, 617,973.06 and 438,921.64

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Solution

The fourth proportional to 448,719.40, 617,973.06 and 438,921.64 is: 604,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,719.40 : 617,973.06 = 438,921.64 : x
  2. Step 2: Convert to fraction form
    448,719.40/617,973.06 = 438,921.64/x
  3. Step 3: Cross multiply
    448,719.40x = 617,973.06 × 438,921.64
  4. Step 4: Simplify right side
    448,719.40x = 271,241,748,971.02
  5. Step 5: Solve for x
    x = 271,241,748,971.02/448,719.40
  6. Step 6: Final answer
    x = 604,479.66

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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.