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Finding the Fourth Proportional to 559,017, 771,440.22 and 317,345.40

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Solution

The fourth proportional to 559,017, 771,440.22 and 317,345.40 is: 437,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,017 : 771,440.22 = 317,345.40 : x
  2. Step 2: Convert to fraction form
    559,017/771,440.22 = 317,345.40/x
  3. Step 3: Cross multiply
    559,017x = 771,440.22 × 317,345.40
  4. Step 4: Simplify right side
    559,017x = 244,813,005,191.99
  5. Step 5: Solve for x
    x = 244,813,005,191.99/559,017
  6. Step 6: Final answer
    x = 437,934.81

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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.