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Finding the Fourth Proportional to 480,018.80, 720,028.20 and 355,602.80

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Solution

The fourth proportional to 480,018.80, 720,028.20 and 355,602.80 is: 533,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,018.80 : 720,028.20 = 355,602.80 : x
  2. Step 2: Convert to fraction form
    480,018.80/720,028.20 = 355,602.80/x
  3. Step 3: Cross multiply
    480,018.80x = 720,028.20 × 355,602.80
  4. Step 4: Simplify right side
    480,018.80x = 256,044,043,998.96
  5. Step 5: Solve for x
    x = 256,044,043,998.96/480,018.80
  6. Step 6: Final answer
    x = 533,404.20

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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.