Home / 859,531.47-1,288,495.67-290,514.57

Finding the Fourth Proportional to 859,531.47, 1,288,495.67 and 290,514.57

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Solution

The fourth proportional to 859,531.47, 1,288,495.67 and 290,514.57 is: 435,500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,531.47 : 1,288,495.67 = 290,514.57 : x
  2. Step 2: Convert to fraction form
    859,531.47/1,288,495.67 = 290,514.57/x
  3. Step 3: Cross multiply
    859,531.47x = 1,288,495.67 × 290,514.57
  4. Step 4: Simplify right side
    859,531.47x = 374,326,764,064.34
  5. Step 5: Solve for x
    x = 374,326,764,064.34/859,531.47
  6. Step 6: Final answer
    x = 435,500.94

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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.