Home / 990,118.60-1,485,497.74-457,988.69

Finding the Fourth Proportional to 990,118.60, 1,485,497.74 and 457,988.69

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Solution

The fourth proportional to 990,118.60, 1,485,497.74 and 457,988.69 is: 687,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,118.60 : 1,485,497.74 = 457,988.69 : x
  2. Step 2: Convert to fraction form
    990,118.60/1,485,497.74 = 457,988.69/x
  3. Step 3: Cross multiply
    990,118.60x = 1,485,497.74 × 457,988.69
  4. Step 4: Simplify right side
    990,118.60x = 680,341,166,509.33
  5. Step 5: Solve for x
    x = 680,341,166,509.33/990,118.60
  6. Step 6: Final answer
    x = 687,130.98

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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.