Home / 830,719.83-1,146,776.06-486,507.90

Finding the Fourth Proportional to 830,719.83, 1,146,776.06 and 486,507.90

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Solution

The fourth proportional to 830,719.83, 1,146,776.06 and 486,507.90 is: 671,605.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,719.83 : 1,146,776.06 = 486,507.90 : x
  2. Step 2: Convert to fraction form
    830,719.83/1,146,776.06 = 486,507.90/x
  3. Step 3: Cross multiply
    830,719.83x = 1,146,776.06 × 486,507.90
  4. Step 4: Simplify right side
    830,719.83x = 557,915,612,720.87
  5. Step 5: Solve for x
    x = 557,915,612,720.87/830,719.83
  6. Step 6: Final answer
    x = 671,605.03

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.