Home / 680,443.04-1,018,173.08-643,943.90

Finding the Fourth Proportional to 680,443.04, 1,018,173.08 and 643,943.90

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Solution

The fourth proportional to 680,443.04, 1,018,173.08 and 643,943.90 is: 963,558.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,443.04 : 1,018,173.08 = 643,943.90 : x
  2. Step 2: Convert to fraction form
    680,443.04/1,018,173.08 = 643,943.90/x
  3. Step 3: Cross multiply
    680,443.04x = 1,018,173.08 × 643,943.90
  4. Step 4: Simplify right side
    680,443.04x = 655,646,344,010.21
  5. Step 5: Solve for x
    x = 655,646,344,010.21/680,443.04
  6. Step 6: Final answer
    x = 963,558.01

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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.