Home / 686,005.32-946,675.11-380,075.61

Finding the Fourth Proportional to 686,005.32, 946,675.11 and 380,075.61

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Solution

The fourth proportional to 686,005.32, 946,675.11 and 380,075.61 is: 524,497.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,005.32 : 946,675.11 = 380,075.61 : x
  2. Step 2: Convert to fraction form
    686,005.32/946,675.11 = 380,075.61/x
  3. Step 3: Cross multiply
    686,005.32x = 946,675.11 × 380,075.61
  4. Step 4: Simplify right side
    686,005.32x = 359,808,119,905.07
  5. Step 5: Solve for x
    x = 359,808,119,905.07/686,005.32
  6. Step 6: Final answer
    x = 524,497.56

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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.