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Finding the Fourth Proportional to 724,563.51, 999,899.85 and 402,274.42

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Solution

The fourth proportional to 724,563.51, 999,899.85 and 402,274.42 is: 555,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,563.51 : 999,899.85 = 402,274.42 : x
  2. Step 2: Convert to fraction form
    724,563.51/999,899.85 = 402,274.42/x
  3. Step 3: Cross multiply
    724,563.51x = 999,899.85 × 402,274.42
  4. Step 4: Simplify right side
    724,563.51x = 402,234,132,216.84
  5. Step 5: Solve for x
    x = 402,234,132,216.84/724,563.51
  6. Step 6: Final answer
    x = 555,139.92

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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.