Home / 638,484.84-881,082.54-348,090.12

Finding the Fourth Proportional to 638,484.84, 881,082.54 and 348,090.12

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Solution

The fourth proportional to 638,484.84, 881,082.54 and 348,090.12 is: 480,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,484.84 : 881,082.54 = 348,090.12 : x
  2. Step 2: Convert to fraction form
    638,484.84/881,082.54 = 348,090.12/x
  3. Step 3: Cross multiply
    638,484.84x = 881,082.54 × 348,090.12
  4. Step 4: Simplify right side
    638,484.84x = 306,696,127,078.51
  5. Step 5: Solve for x
    x = 306,696,127,078.51/638,484.84
  6. Step 6: Final answer
    x = 480,349.90

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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.