Home / 1,125,849-1,553,212.62-666,622.20

Finding the Fourth Proportional to 1,125,849, 1,553,212.62 and 666,622.20

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Solution

The fourth proportional to 1,125,849, 1,553,212.62 and 666,622.20 is: 919,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,849 : 1,553,212.62 = 666,622.20 : x
  2. Step 2: Convert to fraction form
    1,125,849/1,553,212.62 = 666,622.20/x
  3. Step 3: Cross multiply
    1,125,849x = 1,553,212.62 × 666,622.20
  4. Step 4: Simplify right side
    1,125,849x = 1,035,406,013,812.16
  5. Step 5: Solve for x
    x = 1,035,406,013,812.16/1,125,849
  6. Step 6: Final answer
    x = 919,666.86

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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.