Home / 1,242,182.95-1,863,274.85-389,320.77

Finding the Fourth Proportional to 1,242,182.95, 1,863,274.85 and 389,320.77

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Solution

The fourth proportional to 1,242,182.95, 1,863,274.85 and 389,320.77 is: 583,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,182.95 : 1,863,274.85 = 389,320.77 : x
  2. Step 2: Convert to fraction form
    1,242,182.95/1,863,274.85 = 389,320.77/x
  3. Step 3: Cross multiply
    1,242,182.95x = 1,863,274.85 × 389,320.77
  4. Step 4: Simplify right side
    1,242,182.95x = 725,411,608,014.19
  5. Step 5: Solve for x
    x = 725,411,608,014.19/1,242,182.95
  6. Step 6: Final answer
    x = 583,981.30

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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.