Home / 819,231.40-1,130,544.90-456,678.28

Finding the Fourth Proportional to 819,231.40, 1,130,544.90 and 456,678.28

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Solution

The fourth proportional to 819,231.40, 1,130,544.90 and 456,678.28 is: 630,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,231.40 : 1,130,544.90 = 456,678.28 : x
  2. Step 2: Convert to fraction form
    819,231.40/1,130,544.90 = 456,678.28/x
  3. Step 3: Cross multiply
    819,231.40x = 1,130,544.90 × 456,678.28
  4. Step 4: Simplify right side
    819,231.40x = 516,295,300,394.77
  5. Step 5: Solve for x
    x = 516,295,300,394.77/819,231.40
  6. Step 6: Final answer
    x = 630,219.13

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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.