Home / 909,969.40-1,365,018.90-278,882.20

Finding the Fourth Proportional to 909,969.40, 1,365,018.90 and 278,882.20

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Solution

The fourth proportional to 909,969.40, 1,365,018.90 and 278,882.20 is: 418,343.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,969.40 : 1,365,018.90 = 278,882.20 : x
  2. Step 2: Convert to fraction form
    909,969.40/1,365,018.90 = 278,882.20/x
  3. Step 3: Cross multiply
    909,969.40x = 1,365,018.90 × 278,882.20
  4. Step 4: Simplify right side
    909,969.40x = 380,679,473,873.58
  5. Step 5: Solve for x
    x = 380,679,473,873.58/909,969.40
  6. Step 6: Final answer
    x = 418,343.16

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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.