Home / 771,498.90-1,157,433.12-321,969.71

Finding the Fourth Proportional to 771,498.90, 1,157,433.12 and 321,969.71

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Solution

The fourth proportional to 771,498.90, 1,157,433.12 and 321,969.71 is: 483,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,498.90 : 1,157,433.12 = 321,969.71 : x
  2. Step 2: Convert to fraction form
    771,498.90/1,157,433.12 = 321,969.71/x
  3. Step 3: Cross multiply
    771,498.90x = 1,157,433.12 × 321,969.71
  4. Step 4: Simplify right side
    771,498.90x = 372,658,406,534.64
  5. Step 5: Solve for x
    x = 372,658,406,534.64/771,498.90
  6. Step 6: Final answer
    x = 483,031.67

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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.