Home / 812,875.95-1,220,070.47-413,815.47

Finding the Fourth Proportional to 812,875.95, 1,220,070.47 and 413,815.47

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Solution

The fourth proportional to 812,875.95, 1,220,070.47 and 413,815.47 is: 621,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,875.95 : 1,220,070.47 = 413,815.47 : x
  2. Step 2: Convert to fraction form
    812,875.95/1,220,070.47 = 413,815.47/x
  3. Step 3: Cross multiply
    812,875.95x = 1,220,070.47 × 413,815.47
  4. Step 4: Simplify right side
    812,875.95x = 504,884,034,976.17
  5. Step 5: Solve for x
    x = 504,884,034,976.17/812,875.95
  6. Step 6: Final answer
    x = 621,108.34

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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.