Home / 712,754.30-983,625.46-390,464.35

Finding the Fourth Proportional to 712,754.30, 983,625.46 and 390,464.35

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Solution

The fourth proportional to 712,754.30, 983,625.46 and 390,464.35 is: 538,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,754.30 : 983,625.46 = 390,464.35 : x
  2. Step 2: Convert to fraction form
    712,754.30/983,625.46 = 390,464.35/x
  3. Step 3: Cross multiply
    712,754.30x = 983,625.46 × 390,464.35
  4. Step 4: Simplify right side
    712,754.30x = 384,070,672,447.13
  5. Step 5: Solve for x
    x = 384,070,672,447.13/712,754.30
  6. Step 6: Final answer
    x = 538,854.23

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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.