Home / 643,784.34-888,501.04-371,851.93

Finding the Fourth Proportional to 643,784.34, 888,501.04 and 371,851.93

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Solution

The fourth proportional to 643,784.34, 888,501.04 and 371,851.93 is: 513,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,784.34 : 888,501.04 = 371,851.93 : x
  2. Step 2: Convert to fraction form
    643,784.34/888,501.04 = 371,851.93/x
  3. Step 3: Cross multiply
    643,784.34x = 888,501.04 × 371,851.93
  4. Step 4: Simplify right side
    643,784.34x = 330,390,824,793.85
  5. Step 5: Solve for x
    x = 330,390,824,793.85/643,784.34
  6. Step 6: Final answer
    x = 513,201.09

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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.