Home / 1,500,138.60-2,070,176.63-811,795.74

Finding the Fourth Proportional to 1,500,138.60, 2,070,176.63 and 811,795.74

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Solution

The fourth proportional to 1,500,138.60, 2,070,176.63 and 811,795.74 is: 1,120,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,138.60 : 2,070,176.63 = 811,795.74 : x
  2. Step 2: Convert to fraction form
    1,500,138.60/2,070,176.63 = 811,795.74/x
  3. Step 3: Cross multiply
    1,500,138.60x = 2,070,176.63 × 811,795.74
  4. Step 4: Simplify right side
    1,500,138.60x = 1,680,560,569,281.56
  5. Step 5: Solve for x
    x = 1,680,560,569,281.56/1,500,138.60
  6. Step 6: Final answer
    x = 1,120,270.20

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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.