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Finding the Fourth Proportional to 710,520.30, 980,410.95 and 404,608.23

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Solution

The fourth proportional to 710,520.30, 980,410.95 and 404,608.23 is: 558,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,520.30 : 980,410.95 = 404,608.23 : x
  2. Step 2: Convert to fraction form
    710,520.30/980,410.95 = 404,608.23/x
  3. Step 3: Cross multiply
    710,520.30x = 980,410.95 × 404,608.23
  4. Step 4: Simplify right side
    710,520.30x = 396,682,339,152.12
  5. Step 5: Solve for x
    x = 396,682,339,152.12/710,520.30
  6. Step 6: Final answer
    x = 558,298.39

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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.