Home / 712,281.24-982,917.72-389,985.48

Finding the Fourth Proportional to 712,281.24, 982,917.72 and 389,985.48

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Solution

The fourth proportional to 712,281.24, 982,917.72 and 389,985.48 is: 538,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,281.24 : 982,917.72 = 389,985.48 : x
  2. Step 2: Convert to fraction form
    712,281.24/982,917.72 = 389,985.48/x
  3. Step 3: Cross multiply
    712,281.24x = 982,917.72 × 389,985.48
  4. Step 4: Simplify right side
    712,281.24x = 383,323,638,834.71
  5. Step 5: Solve for x
    x = 383,323,638,834.71/712,281.24
  6. Step 6: Final answer
    x = 538,163.32

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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.