Home / 772,154.35-1,158,548.98-339,649.12

Finding the Fourth Proportional to 772,154.35, 1,158,548.98 and 339,649.12

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Solution

The fourth proportional to 772,154.35, 1,158,548.98 and 339,649.12 is: 509,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,154.35 : 1,158,548.98 = 339,649.12 : x
  2. Step 2: Convert to fraction form
    772,154.35/1,158,548.98 = 339,649.12/x
  3. Step 3: Cross multiply
    772,154.35x = 1,158,548.98 × 339,649.12
  4. Step 4: Simplify right side
    772,154.35x = 393,500,139,835.65
  5. Step 5: Solve for x
    x = 393,500,139,835.65/772,154.35
  6. Step 6: Final answer
    x = 509,613.32

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Double scale
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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.