Home / 724,826.40-1,000,283.76-402,540.36

Finding the Fourth Proportional to 724,826.40, 1,000,283.76 and 402,540.36

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Solution

The fourth proportional to 724,826.40, 1,000,283.76 and 402,540.36 is: 555,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,826.40 : 1,000,283.76 = 402,540.36 : x
  2. Step 2: Convert to fraction form
    724,826.40/1,000,283.76 = 402,540.36/x
  3. Step 3: Cross multiply
    724,826.40x = 1,000,283.76 × 402,540.36
  4. Step 4: Simplify right side
    724,826.40x = 402,654,584,852.55
  5. Step 5: Solve for x
    x = 402,654,584,852.55/724,826.40
  6. Step 6: Final answer
    x = 555,518.65

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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.