Home / 1,231,088.68-1,698,953.70-687,254.68

Finding the Fourth Proportional to 1,231,088.68, 1,698,953.70 and 687,254.68

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Solution

The fourth proportional to 1,231,088.68, 1,698,953.70 and 687,254.68 is: 948,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,088.68 : 1,698,953.70 = 687,254.68 : x
  2. Step 2: Convert to fraction form
    1,231,088.68/1,698,953.70 = 687,254.68/x
  3. Step 3: Cross multiply
    1,231,088.68x = 1,698,953.70 × 687,254.68
  4. Step 4: Simplify right side
    1,231,088.68x = 1,167,613,881,428.32
  5. Step 5: Solve for x
    x = 1,167,613,881,428.32/1,231,088.68
  6. Step 6: Final answer
    x = 948,440.11

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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.