Home / 712,736.63-983,601.02-390,446.63

Finding the Fourth Proportional to 712,736.63, 983,601.02 and 390,446.63

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Solution

The fourth proportional to 712,736.63, 983,601.02 and 390,446.63 is: 538,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,736.63 : 983,601.02 = 390,446.63 : x
  2. Step 2: Convert to fraction form
    712,736.63/983,601.02 = 390,446.63/x
  3. Step 3: Cross multiply
    712,736.63x = 983,601.02 × 390,446.63
  4. Step 4: Simplify right side
    712,736.63x = 384,043,696,653.32
  5. Step 5: Solve for x
    x = 384,043,696,653.32/712,736.63
  6. Step 6: Final answer
    x = 538,829.75

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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.