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Finding the Fourth Proportional to 559,197.68, 771,714.64 and 317,502.76

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Solution

The fourth proportional to 559,197.68, 771,714.64 and 317,502.76 is: 438,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,197.68 : 771,714.64 = 317,502.76 : x
  2. Step 2: Convert to fraction form
    559,197.68/771,714.64 = 317,502.76/x
  3. Step 3: Cross multiply
    559,197.68x = 771,714.64 × 317,502.76
  4. Step 4: Simplify right side
    559,197.68x = 245,021,528,132.41
  5. Step 5: Solve for x
    x = 245,021,528,132.41/559,197.68
  6. Step 6: Final answer
    x = 438,166.21

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Double scale
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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.