Home / 688,186.50-949,697.37-386,386.98

Finding the Fourth Proportional to 688,186.50, 949,697.37 and 386,386.98

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Solution

The fourth proportional to 688,186.50, 949,697.37 and 386,386.98 is: 533,214.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,186.50 : 949,697.37 = 386,386.98 : x
  2. Step 2: Convert to fraction form
    688,186.50/949,697.37 = 386,386.98/x
  3. Step 3: Cross multiply
    688,186.50x = 949,697.37 × 386,386.98
  4. Step 4: Simplify right side
    688,186.50x = 366,950,698,708.24
  5. Step 5: Solve for x
    x = 366,950,698,708.24/688,186.50
  6. Step 6: Final answer
    x = 533,214.03

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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.