Home / 688,511.20-1,032,766.80-638,744.80

Finding the Fourth Proportional to 688,511.20, 1,032,766.80 and 638,744.80

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Solution

The fourth proportional to 688,511.20, 1,032,766.80 and 638,744.80 is: 958,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,511.20 : 1,032,766.80 = 638,744.80 : x
  2. Step 2: Convert to fraction form
    688,511.20/1,032,766.80 = 638,744.80/x
  3. Step 3: Cross multiply
    688,511.20x = 1,032,766.80 × 638,744.80
  4. Step 4: Simplify right side
    688,511.20x = 659,674,423,112.64
  5. Step 5: Solve for x
    x = 659,674,423,112.64/688,511.20
  6. Step 6: Final answer
    x = 958,117.20

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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.