Home / 763,407.80-1,145,111.70-364,239.80

Finding the Fourth Proportional to 763,407.80, 1,145,111.70 and 364,239.80

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Solution

The fourth proportional to 763,407.80, 1,145,111.70 and 364,239.80 is: 546,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,407.80 : 1,145,111.70 = 364,239.80 : x
  2. Step 2: Convert to fraction form
    763,407.80/1,145,111.70 = 364,239.80/x
  3. Step 3: Cross multiply
    763,407.80x = 1,145,111.70 × 364,239.80
  4. Step 4: Simplify right side
    763,407.80x = 417,095,256,585.66
  5. Step 5: Solve for x
    x = 417,095,256,585.66/763,407.80
  6. Step 6: Final answer
    x = 546,359.70

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Double scale
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Similar ratio
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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.