Home / 679,947.40-1,018,538.70-347,710.60

Finding the Fourth Proportional to 679,947.40, 1,018,538.70 and 347,710.60

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Solution

The fourth proportional to 679,947.40, 1,018,538.70 and 347,710.60 is: 520,858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,947.40 : 1,018,538.70 = 347,710.60 : x
  2. Step 2: Convert to fraction form
    679,947.40/1,018,538.70 = 347,710.60/x
  3. Step 3: Cross multiply
    679,947.40x = 1,018,538.70 × 347,710.60
  4. Step 4: Simplify right side
    679,947.40x = 354,156,702,500.22
  5. Step 5: Solve for x
    x = 354,156,702,500.22/679,947.40
  6. Step 6: Final answer
    x = 520,858.97

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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.