Home / 1,377,128.70-2,066,021.10-666,572.40

Finding the Fourth Proportional to 1,377,128.70, 2,066,021.10 and 666,572.40

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Solution

The fourth proportional to 1,377,128.70, 2,066,021.10 and 666,572.40 is: 1,000,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,128.70 : 2,066,021.10 = 666,572.40 : x
  2. Step 2: Convert to fraction form
    1,377,128.70/2,066,021.10 = 666,572.40/x
  3. Step 3: Cross multiply
    1,377,128.70x = 2,066,021.10 × 666,572.40
  4. Step 4: Simplify right side
    1,377,128.70x = 1,377,152,643,077.64
  5. Step 5: Solve for x
    x = 1,377,152,643,077.64/1,377,128.70
  6. Step 6: Final answer
    x = 1,000,017.39

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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.