Home / 688,818.40-950,580.77-378,734.06

Finding the Fourth Proportional to 688,818.40, 950,580.77 and 378,734.06

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Solution

The fourth proportional to 688,818.40, 950,580.77 and 378,734.06 is: 522,659.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,818.40 : 950,580.77 = 378,734.06 : x
  2. Step 2: Convert to fraction form
    688,818.40/950,580.77 = 378,734.06/x
  3. Step 3: Cross multiply
    688,818.40x = 950,580.77 × 378,734.06
  4. Step 4: Simplify right side
    688,818.40x = 360,017,314,862.81
  5. Step 5: Solve for x
    x = 360,017,314,862.81/688,818.40
  6. Step 6: Final answer
    x = 522,659.26

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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.