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Finding the Fourth Proportional to 557,543.60, 769,425.95 and 315,826.11

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Solution

The fourth proportional to 557,543.60, 769,425.95 and 315,826.11 is: 435,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,543.60 : 769,425.95 = 315,826.11 : x
  2. Step 2: Convert to fraction form
    557,543.60/769,425.95 = 315,826.11/x
  3. Step 3: Cross multiply
    557,543.60x = 769,425.95 × 315,826.11
  4. Step 4: Simplify right side
    557,543.60x = 243,004,803,142.42
  5. Step 5: Solve for x
    x = 243,004,803,142.42/557,543.60
  6. Step 6: Final answer
    x = 435,848.97

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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.