Home / 688,643.10-1,032,964.65-419,204.70

Finding the Fourth Proportional to 688,643.10, 1,032,964.65 and 419,204.70

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Solution

The fourth proportional to 688,643.10, 1,032,964.65 and 419,204.70 is: 628,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,643.10 : 1,032,964.65 = 419,204.70 : x
  2. Step 2: Convert to fraction form
    688,643.10/1,032,964.65 = 419,204.70/x
  3. Step 3: Cross multiply
    688,643.10x = 1,032,964.65 × 419,204.70
  4. Step 4: Simplify right side
    688,643.10x = 433,023,636,213.86
  5. Step 5: Solve for x
    x = 433,023,636,213.86/688,643.10
  6. Step 6: Final answer
    x = 628,807.05

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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.