Home / 688,540.20-1,032,810.30-578,315.40

Finding the Fourth Proportional to 688,540.20, 1,032,810.30 and 578,315.40

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Solution

The fourth proportional to 688,540.20, 1,032,810.30 and 578,315.40 is: 867,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,540.20 : 1,032,810.30 = 578,315.40 : x
  2. Step 2: Convert to fraction form
    688,540.20/1,032,810.30 = 578,315.40/x
  3. Step 3: Cross multiply
    688,540.20x = 1,032,810.30 × 578,315.40
  4. Step 4: Simplify right side
    688,540.20x = 597,290,101,768.62
  5. Step 5: Solve for x
    x = 597,290,101,768.62/688,540.20
  6. Step 6: Final answer
    x = 867,473.10

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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.