Home / 387,319.20-579,423.60-335,306.40

Finding the Fourth Proportional to 387,319.20, 579,423.60 and 335,306.40

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Solution

The fourth proportional to 387,319.20, 579,423.60 and 335,306.40 is: 501,613.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,319.20 : 579,423.60 = 335,306.40 : x
  2. Step 2: Convert to fraction form
    387,319.20/579,423.60 = 335,306.40/x
  3. Step 3: Cross multiply
    387,319.20x = 579,423.60 × 335,306.40
  4. Step 4: Simplify right side
    387,319.20x = 194,284,441,391.04
  5. Step 5: Solve for x
    x = 194,284,441,391.04/387,319.20
  6. Step 6: Final answer
    x = 501,613.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.