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Finding the Fourth Proportional to 557,332.86, 769,121.55 and 302,688.30

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Solution

The fourth proportional to 557,332.86, 769,121.55 and 302,688.30 is: 417,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,332.86 : 769,121.55 = 302,688.30 : x
  2. Step 2: Convert to fraction form
    557,332.86/769,121.55 = 302,688.30/x
  3. Step 3: Cross multiply
    557,332.86x = 769,121.55 × 302,688.30
  4. Step 4: Simplify right side
    557,332.86x = 232,804,094,462.87
  5. Step 5: Solve for x
    x = 232,804,094,462.87/557,332.86
  6. Step 6: Final answer
    x = 417,711.05

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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.