Home / 522,055.02-720,421.11-307,145.82

Finding the Fourth Proportional to 522,055.02, 720,421.11 and 307,145.82

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Solution

The fourth proportional to 522,055.02, 720,421.11 and 307,145.82 is: 423,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,055.02 : 720,421.11 = 307,145.82 : x
  2. Step 2: Convert to fraction form
    522,055.02/720,421.11 = 307,145.82/x
  3. Step 3: Cross multiply
    522,055.02x = 720,421.11 × 307,145.82
  4. Step 4: Simplify right side
    522,055.02x = 221,274,332,576.26
  5. Step 5: Solve for x
    x = 221,274,332,576.26/522,055.02
  6. Step 6: Final answer
    x = 423,852.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.