Home / 990,124.36-1,485,506.39-457,994.45

Finding the Fourth Proportional to 990,124.36, 1,485,506.39 and 457,994.45

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Solution

The fourth proportional to 990,124.36, 1,485,506.39 and 457,994.45 is: 687,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,124.36 : 1,485,506.39 = 457,994.45 : x
  2. Step 2: Convert to fraction form
    990,124.36/1,485,506.39 = 457,994.45/x
  3. Step 3: Cross multiply
    990,124.36x = 1,485,506.39 × 457,994.45
  4. Step 4: Simplify right side
    990,124.36x = 680,353,683,483.33
  5. Step 5: Solve for x
    x = 680,353,683,483.33/990,124.36
  6. Step 6: Final answer
    x = 687,139.63

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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.