Home / 859,151.80-1,288,715.55-290,411.65

Finding the Fourth Proportional to 859,151.80, 1,288,715.55 and 290,411.65

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Solution

The fourth proportional to 859,151.80, 1,288,715.55 and 290,411.65 is: 435,613.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,151.80 : 1,288,715.55 = 290,411.65 : x
  2. Step 2: Convert to fraction form
    859,151.80/1,288,715.55 = 290,411.65/x
  3. Step 3: Cross multiply
    859,151.80x = 1,288,715.55 × 290,411.65
  4. Step 4: Simplify right side
    859,151.80x = 374,258,009,256.16
  5. Step 5: Solve for x
    x = 374,258,009,256.16/859,151.80
  6. Step 6: Final answer
    x = 435,613.37

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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.