Home / 990,688.88-1,486,017.30-391,655.60

Finding the Fourth Proportional to 990,688.88, 1,486,017.30 and 391,655.60

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Solution

The fourth proportional to 990,688.88, 1,486,017.30 and 391,655.60 is: 587,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,688.88 : 1,486,017.30 = 391,655.60 : x
  2. Step 2: Convert to fraction form
    990,688.88/1,486,017.30 = 391,655.60/x
  3. Step 3: Cross multiply
    990,688.88x = 1,486,017.30 × 391,655.60
  4. Step 4: Simplify right side
    990,688.88x = 582,006,997,241.88
  5. Step 5: Solve for x
    x = 582,006,997,241.88/990,688.88
  6. Step 6: Final answer
    x = 587,477.07

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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.