Home / 819,420.68-1,130,805.27-456,867.11

Finding the Fourth Proportional to 819,420.68, 1,130,805.27 and 456,867.11

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Solution

The fourth proportional to 819,420.68, 1,130,805.27 and 456,867.11 is: 630,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,420.68 : 1,130,805.27 = 456,867.11 : x
  2. Step 2: Convert to fraction form
    819,420.68/1,130,805.27 = 456,867.11/x
  3. Step 3: Cross multiply
    819,420.68x = 1,130,805.27 × 456,867.11
  4. Step 4: Simplify right side
    819,420.68x = 516,627,730,023.64
  5. Step 5: Solve for x
    x = 516,627,730,023.64/819,420.68
  6. Step 6: Final answer
    x = 630,479.25

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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.