Home / 1,330,039.40-1,995,339.47-431,411.22

Finding the Fourth Proportional to 1,330,039.40, 1,995,339.47 and 431,411.22

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Solution

The fourth proportional to 1,330,039.40, 1,995,339.47 and 431,411.22 is: 647,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,039.40 : 1,995,339.47 = 431,411.22 : x
  2. Step 2: Convert to fraction form
    1,330,039.40/1,995,339.47 = 431,411.22/x
  3. Step 3: Cross multiply
    1,330,039.40x = 1,995,339.47 × 431,411.22
  4. Step 4: Simplify right side
    1,330,039.40x = 860,811,832,909.80
  5. Step 5: Solve for x
    x = 860,811,832,909.80/1,330,039.40
  6. Step 6: Final answer
    x = 647,207.77

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1.5x scale

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.