Home / 1,011,392.98-1,517,311-380,306.79

Finding the Fourth Proportional to 1,011,392.98, 1,517,311 and 380,306.79

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Solution

The fourth proportional to 1,011,392.98, 1,517,311 and 380,306.79 is: 570,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,392.98 : 1,517,311 = 380,306.79 : x
  2. Step 2: Convert to fraction form
    1,011,392.98/1,517,311 = 380,306.79/x
  3. Step 3: Cross multiply
    1,011,392.98x = 1,517,311 × 380,306.79
  4. Step 4: Simplify right side
    1,011,392.98x = 577,043,675,841.69
  5. Step 5: Solve for x
    x = 577,043,675,841.69/1,011,392.98
  6. Step 6: Final answer
    x = 570,543.49

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Double scale
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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.