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Finding the Fourth Proportional to 557,246.48, 769,009.08 and 315,522.59

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Solution

The fourth proportional to 557,246.48, 769,009.08 and 315,522.59 is: 435,426.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,246.48 : 769,009.08 = 315,522.59 : x
  2. Step 2: Convert to fraction form
    557,246.48/769,009.08 = 315,522.59/x
  3. Step 3: Cross multiply
    557,246.48x = 769,009.08 × 315,522.59
  4. Step 4: Simplify right side
    557,246.48x = 242,639,736,655.12
  5. Step 5: Solve for x
    x = 242,639,736,655.12/557,246.48
  6. Step 6: Final answer
    x = 435,426.23

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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.