Home / 985,712.80-1,478,569.20-424,747.30

Finding the Fourth Proportional to 985,712.80, 1,478,569.20 and 424,747.30

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Solution

The fourth proportional to 985,712.80, 1,478,569.20 and 424,747.30 is: 637,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,712.80 : 1,478,569.20 = 424,747.30 : x
  2. Step 2: Convert to fraction form
    985,712.80/1,478,569.20 = 424,747.30/x
  3. Step 3: Cross multiply
    985,712.80x = 1,478,569.20 × 424,747.30
  4. Step 4: Simplify right side
    985,712.80x = 628,018,275,563.16
  5. Step 5: Solve for x
    x = 628,018,275,563.16/985,712.80
  6. Step 6: Final answer
    x = 637,120.95

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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.