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Finding the Fourth Proportional to 713,809.60, 985,139.58 and 427,329.52

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Solution

The fourth proportional to 713,809.60, 985,139.58 and 427,329.52 is: 589,764.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,809.60 : 985,139.58 = 427,329.52 : x
  2. Step 2: Convert to fraction form
    713,809.60/985,139.58 = 427,329.52/x
  3. Step 3: Cross multiply
    713,809.60x = 985,139.58 × 427,329.52
  4. Step 4: Simplify right side
    713,809.60x = 420,979,223,854.40
  5. Step 5: Solve for x
    x = 420,979,223,854.40/713,809.60
  6. Step 6: Final answer
    x = 589,764.03

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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.