Home / 688,031.20-1,032,046.80-520,069.60

Finding the Fourth Proportional to 688,031.20, 1,032,046.80 and 520,069.60

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Solution

The fourth proportional to 688,031.20, 1,032,046.80 and 520,069.60 is: 780,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,031.20 : 1,032,046.80 = 520,069.60 : x
  2. Step 2: Convert to fraction form
    688,031.20/1,032,046.80 = 520,069.60/x
  3. Step 3: Cross multiply
    688,031.20x = 1,032,046.80 × 520,069.60
  4. Step 4: Simplify right side
    688,031.20x = 536,736,166,457.28
  5. Step 5: Solve for x
    x = 536,736,166,457.28/688,031.20
  6. Step 6: Final answer
    x = 780,104.40

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Similar ratio
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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.