Home / 686,015.30-946,688.91-380,085.59

Finding the Fourth Proportional to 686,015.30, 946,688.91 and 380,085.59

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Solution

The fourth proportional to 686,015.30, 946,688.91 and 380,085.59 is: 524,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,015.30 : 946,688.91 = 380,085.59 : x
  2. Step 2: Convert to fraction form
    686,015.30/946,688.91 = 380,085.59/x
  3. Step 3: Cross multiply
    686,015.30x = 946,688.91 × 380,085.59
  4. Step 4: Simplify right side
    686,015.30x = 359,822,812,903.81
  5. Step 5: Solve for x
    x = 359,822,812,903.81/686,015.30
  6. Step 6: Final answer
    x = 524,511.35

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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.