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Finding the Fourth Proportional to 1,385,988, 1,912,663.44 and 750,084

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Solution

The fourth proportional to 1,385,988, 1,912,663.44 and 750,084 is: 1,035,115.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,988 : 1,912,663.44 = 750,084 : x
  2. Step 2: Convert to fraction form
    1,385,988/1,912,663.44 = 750,084/x
  3. Step 3: Cross multiply
    1,385,988x = 1,912,663.44 × 750,084
  4. Step 4: Simplify right side
    1,385,988x = 1,434,658,243,728.96
  5. Step 5: Solve for x
    x = 1,434,658,243,728.96/1,385,988
  6. Step 6: Final answer
    x = 1,035,115.92

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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.