Home / 1,105,405.40-1,658,108.10-918,781.40

Finding the Fourth Proportional to 1,105,405.40, 1,658,108.10 and 918,781.40

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Solution

The fourth proportional to 1,105,405.40, 1,658,108.10 and 918,781.40 is: 1,378,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,405.40 : 1,658,108.10 = 918,781.40 : x
  2. Step 2: Convert to fraction form
    1,105,405.40/1,658,108.10 = 918,781.40/x
  3. Step 3: Cross multiply
    1,105,405.40x = 1,658,108.10 × 918,781.40
  4. Step 4: Simplify right side
    1,105,405.40x = 1,523,438,881,469.34
  5. Step 5: Solve for x
    x = 1,523,438,881,469.34/1,105,405.40
  6. Step 6: Final answer
    x = 1,378,172.10

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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.