Home / 763,426.20-1,145,139.30-705,689.40

Finding the Fourth Proportional to 763,426.20, 1,145,139.30 and 705,689.40

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Solution

The fourth proportional to 763,426.20, 1,145,139.30 and 705,689.40 is: 1,058,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,426.20 : 1,145,139.30 = 705,689.40 : x
  2. Step 2: Convert to fraction form
    763,426.20/1,145,139.30 = 705,689.40/x
  3. Step 3: Cross multiply
    763,426.20x = 1,145,139.30 × 705,689.40
  4. Step 4: Simplify right side
    763,426.20x = 808,112,665,533.42
  5. Step 5: Solve for x
    x = 808,112,665,533.42/763,426.20
  6. Step 6: Final answer
    x = 1,058,534.10

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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.