Home / 1,275,483.64-1,913,108.80-389,019.64

Finding the Fourth Proportional to 1,275,483.64, 1,913,108.80 and 389,019.64

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Solution

The fourth proportional to 1,275,483.64, 1,913,108.80 and 389,019.64 is: 583,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,483.64 : 1,913,108.80 = 389,019.64 : x
  2. Step 2: Convert to fraction form
    1,275,483.64/1,913,108.80 = 389,019.64/x
  3. Step 3: Cross multiply
    1,275,483.64x = 1,913,108.80 × 389,019.64
  4. Step 4: Simplify right side
    1,275,483.64x = 744,236,896,656.83
  5. Step 5: Solve for x
    x = 744,236,896,656.83/1,275,483.64
  6. Step 6: Final answer
    x = 583,493.88

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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.