Home / 664,443.36-916,823.70-392,473.52

Finding the Fourth Proportional to 664,443.36, 916,823.70 and 392,473.52

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Solution

The fourth proportional to 664,443.36, 916,823.70 and 392,473.52 is: 541,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,443.36 : 916,823.70 = 392,473.52 : x
  2. Step 2: Convert to fraction form
    664,443.36/916,823.70 = 392,473.52/x
  3. Step 3: Cross multiply
    664,443.36x = 916,823.70 × 392,473.52
  4. Step 4: Simplify right side
    664,443.36x = 359,829,024,758.42
  5. Step 5: Solve for x
    x = 359,829,024,758.42/664,443.36
  6. Step 6: Final answer
    x = 541,549.58

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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.