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Finding the Fourth Proportional to 1,871,978.40, 2,807,967.60 and 1,560,938.40

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Solution

The fourth proportional to 1,871,978.40, 2,807,967.60 and 1,560,938.40 is: 2,341,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871,978.40 : 2,807,967.60 = 1,560,938.40 : x
  2. Step 2: Convert to fraction form
    1,871,978.40/2,807,967.60 = 1,560,938.40/x
  3. Step 3: Cross multiply
    1,871,978.40x = 2,807,967.60 × 1,560,938.40
  4. Step 4: Simplify right side
    1,871,978.40x = 4,383,064,452,795.84
  5. Step 5: Solve for x
    x = 4,383,064,452,795.84/1,871,978.40
  6. Step 6: Final answer
    x = 2,341,407.60

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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.