Home / 891,078.12-1,229,611.86-509,030.28

Finding the Fourth Proportional to 891,078.12, 1,229,611.86 and 509,030.28

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Solution

The fourth proportional to 891,078.12, 1,229,611.86 and 509,030.28 is: 702,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,078.12 : 1,229,611.86 = 509,030.28 : x
  2. Step 2: Convert to fraction form
    891,078.12/1,229,611.86 = 509,030.28/x
  3. Step 3: Cross multiply
    891,078.12x = 1,229,611.86 × 509,030.28
  4. Step 4: Simplify right side
    891,078.12x = 625,909,669,387.12
  5. Step 5: Solve for x
    x = 625,909,669,387.12/891,078.12
  6. Step 6: Final answer
    x = 702,418.40

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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.