Home / 763,457.60-1,145,186.40-756,459.20

Finding the Fourth Proportional to 763,457.60, 1,145,186.40 and 756,459.20

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Solution

The fourth proportional to 763,457.60, 1,145,186.40 and 756,459.20 is: 1,134,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,457.60 : 1,145,186.40 = 756,459.20 : x
  2. Step 2: Convert to fraction form
    763,457.60/1,145,186.40 = 756,459.20/x
  3. Step 3: Cross multiply
    763,457.60x = 1,145,186.40 × 756,459.20
  4. Step 4: Simplify right side
    763,457.60x = 866,286,787,994.88
  5. Step 5: Solve for x
    x = 866,286,787,994.88/763,457.60
  6. Step 6: Final answer
    x = 1,134,688.80

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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.