Home / 1,355,842.43-1,871,939.05-840,143.58

Finding the Fourth Proportional to 1,355,842.43, 1,871,939.05 and 840,143.58

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Solution

The fourth proportional to 1,355,842.43, 1,871,939.05 and 840,143.58 is: 1,159,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,842.43 : 1,871,939.05 = 840,143.58 : x
  2. Step 2: Convert to fraction form
    1,355,842.43/1,871,939.05 = 840,143.58/x
  3. Step 3: Cross multiply
    1,355,842.43x = 1,871,939.05 × 840,143.58
  4. Step 4: Simplify right side
    1,355,842.43x = 1,572,697,565,888.67
  5. Step 5: Solve for x
    x = 1,572,697,565,888.67/1,355,842.43
  6. Step 6: Final answer
    x = 1,159,941.25

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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.