Home / 386,332.40-579,498.60-331,036.40

Finding the Fourth Proportional to 386,332.40, 579,498.60 and 331,036.40

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Solution

The fourth proportional to 386,332.40, 579,498.60 and 331,036.40 is: 496,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,332.40 : 579,498.60 = 331,036.40 : x
  2. Step 2: Convert to fraction form
    386,332.40/579,498.60 = 331,036.40/x
  3. Step 3: Cross multiply
    386,332.40x = 579,498.60 × 331,036.40
  4. Step 4: Simplify right side
    386,332.40x = 191,835,130,349.04
  5. Step 5: Solve for x
    x = 191,835,130,349.04/386,332.40
  6. Step 6: Final answer
    x = 496,554.60

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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.