Home / 742,078.21-1,024,068.28-419,781.46

Finding the Fourth Proportional to 742,078.21, 1,024,068.28 and 419,781.46

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Solution

The fourth proportional to 742,078.21, 1,024,068.28 and 419,781.46 is: 579,298.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,078.21 : 1,024,068.28 = 419,781.46 : x
  2. Step 2: Convert to fraction form
    742,078.21/1,024,068.28 = 419,781.46/x
  3. Step 3: Cross multiply
    742,078.21x = 1,024,068.28 × 419,781.46
  4. Step 4: Simplify right side
    742,078.21x = 429,884,871,548.29
  5. Step 5: Solve for x
    x = 429,884,871,548.29/742,078.21
  6. Step 6: Final answer
    x = 579,298.61

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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.