Home / 712,943.48-983,862.24-390,650.96

Finding the Fourth Proportional to 712,943.48, 983,862.24 and 390,650.96

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Solution

The fourth proportional to 712,943.48, 983,862.24 and 390,650.96 is: 539,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,943.48 : 983,862.24 = 390,650.96 : x
  2. Step 2: Convert to fraction form
    712,943.48/983,862.24 = 390,650.96/x
  3. Step 3: Cross multiply
    712,943.48x = 983,862.24 × 390,650.96
  4. Step 4: Simplify right side
    712,943.48x = 384,346,728,563.75
  5. Step 5: Solve for x
    x = 384,346,728,563.75/712,943.48
  6. Step 6: Final answer
    x = 539,098.45

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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.