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Finding the Fourth Proportional to 724,200.28, 999,847.20 and 679,012

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Solution

The fourth proportional to 724,200.28, 999,847.20 and 679,012 is: 937,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,200.28 : 999,847.20 = 679,012 : x
  2. Step 2: Convert to fraction form
    724,200.28/999,847.20 = 679,012/x
  3. Step 3: Cross multiply
    724,200.28x = 999,847.20 × 679,012
  4. Step 4: Simplify right side
    724,200.28x = 678,908,246,966.40
  5. Step 5: Solve for x
    x = 678,908,246,966.40/724,200.28
  6. Step 6: Final answer
    x = 937,459.24

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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.