Home / 712,748.94-983,593.96-390,470.72

Finding the Fourth Proportional to 712,748.94, 983,593.96 and 390,470.72

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Solution

The fourth proportional to 712,748.94, 983,593.96 and 390,470.72 is: 538,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,748.94 : 983,593.96 = 390,470.72 : x
  2. Step 2: Convert to fraction form
    712,748.94/983,593.96 = 390,470.72/x
  3. Step 3: Cross multiply
    712,748.94x = 983,593.96 × 390,470.72
  4. Step 4: Simplify right side
    712,748.94x = 384,064,641,748.85
  5. Step 5: Solve for x
    x = 384,064,641,748.85/712,748.94
  6. Step 6: Final answer
    x = 538,849.83

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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.