Home / 712,943.37-983,884.72-390,673.93

Finding the Fourth Proportional to 712,943.37, 983,884.72 and 390,673.93

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Solution

The fourth proportional to 712,943.37, 983,884.72 and 390,673.93 is: 539,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,943.37 : 983,884.72 = 390,673.93 : x
  2. Step 2: Convert to fraction form
    712,943.37/983,884.72 = 390,673.93/x
  3. Step 3: Cross multiply
    712,943.37x = 983,884.72 × 390,673.93
  4. Step 4: Simplify right side
    712,943.37x = 384,378,110,229.35
  5. Step 5: Solve for x
    x = 384,378,110,229.35/712,943.37
  6. Step 6: Final answer
    x = 539,142.56

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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.