Home / 990,304.92-1,485,218.16-457,313.58

Finding the Fourth Proportional to 990,304.92, 1,485,218.16 and 457,313.58

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Solution

The fourth proportional to 990,304.92, 1,485,218.16 and 457,313.58 is: 685,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,304.92 : 1,485,218.16 = 457,313.58 : x
  2. Step 2: Convert to fraction form
    990,304.92/1,485,218.16 = 457,313.58/x
  3. Step 3: Cross multiply
    990,304.92x = 1,485,218.16 × 457,313.58
  4. Step 4: Simplify right side
    990,304.92x = 679,210,433,830.61
  5. Step 5: Solve for x
    x = 679,210,433,830.61/990,304.92
  6. Step 6: Final answer
    x = 685,859.90

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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.