Home / 712,523.67-983,246.09-390,171.42

Finding the Fourth Proportional to 712,523.67, 983,246.09 and 390,171.42

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Solution

The fourth proportional to 712,523.67, 983,246.09 and 390,171.42 is: 538,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,523.67 : 983,246.09 = 390,171.42 : x
  2. Step 2: Convert to fraction form
    712,523.67/983,246.09 = 390,171.42/x
  3. Step 3: Cross multiply
    712,523.67x = 983,246.09 × 390,171.42
  4. Step 4: Simplify right side
    712,523.67x = 383,634,521,193.89
  5. Step 5: Solve for x
    x = 383,634,521,193.89/712,523.67
  6. Step 6: Final answer
    x = 538,416.53

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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.