Home / 712,529.45-983,301.33-390,269.60

Finding the Fourth Proportional to 712,529.45, 983,301.33 and 390,269.60

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Solution

The fourth proportional to 712,529.45, 983,301.33 and 390,269.60 is: 538,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,529.45 : 983,301.33 = 390,269.60 : x
  2. Step 2: Convert to fraction form
    712,529.45/983,301.33 = 390,269.60/x
  3. Step 3: Cross multiply
    712,529.45x = 983,301.33 × 390,269.60
  4. Step 4: Simplify right side
    712,529.45x = 383,752,611,822.06
  5. Step 5: Solve for x
    x = 383,752,611,822.06/712,529.45
  6. Step 6: Final answer
    x = 538,577.90

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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.