Home / 763,419.40-1,145,129.10-745,923.40

Finding the Fourth Proportional to 763,419.40, 1,145,129.10 and 745,923.40

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Solution

The fourth proportional to 763,419.40, 1,145,129.10 and 745,923.40 is: 1,118,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,419.40 : 1,145,129.10 = 745,923.40 : x
  2. Step 2: Convert to fraction form
    763,419.40/1,145,129.10 = 745,923.40/x
  3. Step 3: Cross multiply
    763,419.40x = 1,145,129.10 × 745,923.40
  4. Step 4: Simplify right side
    763,419.40x = 854,178,591,710.94
  5. Step 5: Solve for x
    x = 854,178,591,710.94/763,419.40
  6. Step 6: Final answer
    x = 1,118,885.10

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Double scale
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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.