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Finding the Fourth Proportional to 559,205.82, 771,725.85 and 317,510.88

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Solution

The fourth proportional to 559,205.82, 771,725.85 and 317,510.88 is: 438,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,205.82 : 771,725.85 = 317,510.88 : x
  2. Step 2: Convert to fraction form
    559,205.82/771,725.85 = 317,510.88/x
  3. Step 3: Cross multiply
    559,205.82x = 771,725.85 × 317,510.88
  4. Step 4: Simplify right side
    559,205.82x = 245,031,353,752.25
  5. Step 5: Solve for x
    x = 245,031,353,752.25/559,205.82
  6. Step 6: Final answer
    x = 438,177.40

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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.