Home / 763,426.60-1,145,139.90-756,428.20

Finding the Fourth Proportional to 763,426.60, 1,145,139.90 and 756,428.20

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Solution

The fourth proportional to 763,426.60, 1,145,139.90 and 756,428.20 is: 1,134,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,426.60 : 1,145,139.90 = 756,428.20 : x
  2. Step 2: Convert to fraction form
    763,426.60/1,145,139.90 = 756,428.20/x
  3. Step 3: Cross multiply
    763,426.60x = 1,145,139.90 × 756,428.20
  4. Step 4: Simplify right side
    763,426.60x = 866,216,113,305.18
  5. Step 5: Solve for x
    x = 866,216,113,305.18/763,426.60
  6. Step 6: Final answer
    x = 1,134,642.30

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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.