Home / 712,300.14-982,973.97-390,010.14

Finding the Fourth Proportional to 712,300.14, 982,973.97 and 390,010.14

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Solution

The fourth proportional to 712,300.14, 982,973.97 and 390,010.14 is: 538,213.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,300.14 : 982,973.97 = 390,010.14 : x
  2. Step 2: Convert to fraction form
    712,300.14/982,973.97 = 390,010.14/x
  3. Step 3: Cross multiply
    712,300.14x = 982,973.97 × 390,010.14
  4. Step 4: Simplify right side
    712,300.14x = 383,369,815,656.06
  5. Step 5: Solve for x
    x = 383,369,815,656.06/712,300.14
  6. Step 6: Final answer
    x = 538,213.87

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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.