Home / 712,939.40-1,069,409.10-239,467.40

Finding the Fourth Proportional to 712,939.40, 1,069,409.10 and 239,467.40

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Solution

The fourth proportional to 712,939.40, 1,069,409.10 and 239,467.40 is: 359,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,939.40 : 1,069,409.10 = 239,467.40 : x
  2. Step 2: Convert to fraction form
    712,939.40/1,069,409.10 = 239,467.40/x
  3. Step 3: Cross multiply
    712,939.40x = 1,069,409.10 × 239,467.40
  4. Step 4: Simplify right side
    712,939.40x = 256,088,616,713.34
  5. Step 5: Solve for x
    x = 256,088,616,713.34/712,939.40
  6. Step 6: Final answer
    x = 359,201.10

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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.