Home / 763,412.80-1,145,119.20-483,246.40

Finding the Fourth Proportional to 763,412.80, 1,145,119.20 and 483,246.40

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Solution

The fourth proportional to 763,412.80, 1,145,119.20 and 483,246.40 is: 724,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,412.80 : 1,145,119.20 = 483,246.40 : x
  2. Step 2: Convert to fraction form
    763,412.80/1,145,119.20 = 483,246.40/x
  3. Step 3: Cross multiply
    763,412.80x = 1,145,119.20 × 483,246.40
  4. Step 4: Simplify right side
    763,412.80x = 553,374,730,970.88
  5. Step 5: Solve for x
    x = 553,374,730,970.88/763,412.80
  6. Step 6: Final answer
    x = 724,869.60

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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.