Home / 764,335.80-1,146,503.70-432,559.80

Finding the Fourth Proportional to 764,335.80, 1,146,503.70 and 432,559.80

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Solution

The fourth proportional to 764,335.80, 1,146,503.70 and 432,559.80 is: 648,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,335.80 : 1,146,503.70 = 432,559.80 : x
  2. Step 2: Convert to fraction form
    764,335.80/1,146,503.70 = 432,559.80/x
  3. Step 3: Cross multiply
    764,335.80x = 1,146,503.70 × 432,559.80
  4. Step 4: Simplify right side
    764,335.80x = 495,931,411,171.26
  5. Step 5: Solve for x
    x = 495,931,411,171.26/764,335.80
  6. Step 6: Final answer
    x = 648,839.70

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Double scale
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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.