Home / 990,913.50-1,486,444.37-280,998.72

Finding the Fourth Proportional to 990,913.50, 1,486,444.37 and 280,998.72

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Solution

The fourth proportional to 990,913.50, 1,486,444.37 and 280,998.72 is: 421,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,913.50 : 1,486,444.37 = 280,998.72 : x
  2. Step 2: Convert to fraction form
    990,913.50/1,486,444.37 = 280,998.72/x
  3. Step 3: Cross multiply
    990,913.50x = 1,486,444.37 × 280,998.72
  4. Step 4: Simplify right side
    990,913.50x = 417,688,963,916.21
  5. Step 5: Solve for x
    x = 417,688,963,916.21/990,913.50
  6. Step 6: Final answer
    x = 421,519.10

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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.