Home / 689,172.35-950,918.45-402,637.10

Finding the Fourth Proportional to 689,172.35, 950,918.45 and 402,637.10

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Solution

The fourth proportional to 689,172.35, 950,918.45 and 402,637.10 is: 555,557.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,172.35 : 950,918.45 = 402,637.10 : x
  2. Step 2: Convert to fraction form
    689,172.35/950,918.45 = 402,637.10/x
  3. Step 3: Cross multiply
    689,172.35x = 950,918.45 × 402,637.10
  4. Step 4: Simplify right side
    689,172.35x = 382,875,040,276.72
  5. Step 5: Solve for x
    x = 382,875,040,276.72/689,172.35
  6. Step 6: Final answer
    x = 555,557.75

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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.