Home / 990,225.04-1,485,913.92-421,576.24

Finding the Fourth Proportional to 990,225.04, 1,485,913.92 and 421,576.24

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Solution

The fourth proportional to 990,225.04, 1,485,913.92 and 421,576.24 is: 632,609.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,225.04 : 1,485,913.92 = 421,576.24 : x
  2. Step 2: Convert to fraction form
    990,225.04/1,485,913.92 = 421,576.24/x
  3. Step 3: Cross multiply
    990,225.04x = 1,485,913.92 × 421,576.24
  4. Step 4: Simplify right side
    990,225.04x = 626,426,003,357.26
  5. Step 5: Solve for x
    x = 626,426,003,357.26/990,225.04
  6. Step 6: Final answer
    x = 632,609.74

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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.