Home / 763,701.40-1,143,867.66-478,463.32

Finding the Fourth Proportional to 763,701.40, 1,143,867.66 and 478,463.32

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Solution

The fourth proportional to 763,701.40, 1,143,867.66 and 478,463.32 is: 716,639.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,701.40 : 1,143,867.66 = 478,463.32 : x
  2. Step 2: Convert to fraction form
    763,701.40/1,143,867.66 = 478,463.32/x
  3. Step 3: Cross multiply
    763,701.40x = 1,143,867.66 × 478,463.32
  4. Step 4: Simplify right side
    763,701.40x = 547,298,718,244.23
  5. Step 5: Solve for x
    x = 547,298,718,244.23/763,701.40
  6. Step 6: Final answer
    x = 716,639.67

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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.