Home / 830,265.80-1,245,398.70-231,319.40

Finding the Fourth Proportional to 830,265.80, 1,245,398.70 and 231,319.40

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Solution

The fourth proportional to 830,265.80, 1,245,398.70 and 231,319.40 is: 346,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,265.80 : 1,245,398.70 = 231,319.40 : x
  2. Step 2: Convert to fraction form
    830,265.80/1,245,398.70 = 231,319.40/x
  3. Step 3: Cross multiply
    830,265.80x = 1,245,398.70 × 231,319.40
  4. Step 4: Simplify right side
    830,265.80x = 288,084,880,044.78
  5. Step 5: Solve for x
    x = 288,084,880,044.78/830,265.80
  6. Step 6: Final answer
    x = 346,979.10

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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.