Home / 391,215,629.60-586,823,444.40-209,817,101.60

Finding the Fourth Proportional to 391,215,629.60, 586,823,444.40 and 209,817,101.60

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Solution

The fourth proportional to 391,215,629.60, 586,823,444.40 and 209,817,101.60 is: 314,725,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,215,629.60 : 586,823,444.40 = 209,817,101.60 : x
  2. Step 2: Convert to fraction form
    391,215,629.60/586,823,444.40 = 209,817,101.60/x
  3. Step 3: Cross multiply
    391,215,629.60x = 586,823,444.40 × 209,817,101.60
  4. Step 4: Simplify right side
    391,215,629.60x = 123,125,594,254,936,736
  5. Step 5: Solve for x
    x = 123,125,594,254,936,736/391,215,629.60
  6. Step 6: Final answer
    x = 314,725,652.40

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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.