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Finding the Fourth Proportional to 710,725.68, 980,864.60 and 404,735.20

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Solution

The fourth proportional to 710,725.68, 980,864.60 and 404,735.20 is: 558,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,725.68 : 980,864.60 = 404,735.20 : x
  2. Step 2: Convert to fraction form
    710,725.68/980,864.60 = 404,735.20/x
  3. Step 3: Cross multiply
    710,725.68x = 980,864.60 × 404,735.20
  4. Step 4: Simplify right side
    710,725.68x = 396,990,430,053.92
  5. Step 5: Solve for x
    x = 396,990,430,053.92/710,725.68
  6. Step 6: Final answer
    x = 558,570.54

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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.