Home / 753,931.76-1,130,602.38-280,358.78

Finding the Fourth Proportional to 753,931.76, 1,130,602.38 and 280,358.78

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Solution

The fourth proportional to 753,931.76, 1,130,602.38 and 280,358.78 is: 420,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,931.76 : 1,130,602.38 = 280,358.78 : x
  2. Step 2: Convert to fraction form
    753,931.76/1,130,602.38 = 280,358.78/x
  3. Step 3: Cross multiply
    753,931.76x = 1,130,602.38 × 280,358.78
  4. Step 4: Simplify right side
    753,931.76x = 316,974,303,921.90
  5. Step 5: Solve for x
    x = 316,974,303,921.90/753,931.76
  6. Step 6: Final answer
    x = 420,428.37

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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.