Home / 1,355,091.17-1,869,893.20-811,215.03

Finding the Fourth Proportional to 1,355,091.17, 1,869,893.20 and 811,215.03

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Solution

The fourth proportional to 1,355,091.17, 1,869,893.20 and 811,215.03 is: 1,119,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,091.17 : 1,869,893.20 = 811,215.03 : x
  2. Step 2: Convert to fraction form
    1,355,091.17/1,869,893.20 = 811,215.03/x
  3. Step 3: Cross multiply
    1,355,091.17x = 1,869,893.20 × 811,215.03
  4. Step 4: Simplify right side
    1,355,091.17x = 1,516,885,460,583.69
  5. Step 5: Solve for x
    x = 1,516,885,460,583.69/1,355,091.17
  6. Step 6: Final answer
    x = 1,119,397.35

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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.