Home / 1,138,159.80-1,707,336.90-390,205.80

Finding the Fourth Proportional to 1,138,159.80, 1,707,336.90 and 390,205.80

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Solution

The fourth proportional to 1,138,159.80, 1,707,336.90 and 390,205.80 is: 585,342.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,159.80 : 1,707,336.90 = 390,205.80 : x
  2. Step 2: Convert to fraction form
    1,138,159.80/1,707,336.90 = 390,205.80/x
  3. Step 3: Cross multiply
    1,138,159.80x = 1,707,336.90 × 390,205.80
  4. Step 4: Simplify right side
    1,138,159.80x = 666,212,760,934.02
  5. Step 5: Solve for x
    x = 666,212,760,934.02/1,138,159.80
  6. Step 6: Final answer
    x = 585,342.02

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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.