Home / 724,948.79-1,000,401.48-402,679.44

Finding the Fourth Proportional to 724,948.79, 1,000,401.48 and 402,679.44

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Solution

The fourth proportional to 724,948.79, 1,000,401.48 and 402,679.44 is: 555,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,948.79 : 1,000,401.48 = 402,679.44 : x
  2. Step 2: Convert to fraction form
    724,948.79/1,000,401.48 = 402,679.44/x
  3. Step 3: Cross multiply
    724,948.79x = 1,000,401.48 × 402,679.44
  4. Step 4: Simplify right side
    724,948.79x = 402,841,107,741.57
  5. Step 5: Solve for x
    x = 402,841,107,741.57/724,948.79
  6. Step 6: Final answer
    x = 555,682.16

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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.