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Finding the Fourth Proportional to 557,783.70, 769,712.02 and 316,069.17

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Solution

The fourth proportional to 557,783.70, 769,712.02 and 316,069.17 is: 436,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,783.70 : 769,712.02 = 316,069.17 : x
  2. Step 2: Convert to fraction form
    557,783.70/769,712.02 = 316,069.17/x
  3. Step 3: Cross multiply
    557,783.70x = 769,712.02 × 316,069.17
  4. Step 4: Simplify right side
    557,783.70x = 243,282,239,300.42
  5. Step 5: Solve for x
    x = 243,282,239,300.42/557,783.70
  6. Step 6: Final answer
    x = 436,158.75

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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.