Home / 686,421.36-947,267.82-380,501.04

Finding the Fourth Proportional to 686,421.36, 947,267.82 and 380,501.04

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Solution

The fourth proportional to 686,421.36, 947,267.82 and 380,501.04 is: 525,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,421.36 : 947,267.82 = 380,501.04 : x
  2. Step 2: Convert to fraction form
    686,421.36/947,267.82 = 380,501.04/x
  3. Step 3: Cross multiply
    686,421.36x = 947,267.82 × 380,501.04
  4. Step 4: Simplify right side
    686,421.36x = 360,436,390,668.53
  5. Step 5: Solve for x
    x = 360,436,390,668.53/686,421.36
  6. Step 6: Final answer
    x = 525,094.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.