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Finding the Fourth Proportional to 573,131.85, 790,929.12 and 315,036.98

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Solution

The fourth proportional to 573,131.85, 790,929.12 and 315,036.98 is: 434,754.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,131.85 : 790,929.12 = 315,036.98 : x
  2. Step 2: Convert to fraction form
    573,131.85/790,929.12 = 315,036.98/x
  3. Step 3: Cross multiply
    573,131.85x = 790,929.12 × 315,036.98
  4. Step 4: Simplify right side
    573,131.85x = 249,171,921,358.86
  5. Step 5: Solve for x
    x = 249,171,921,358.86/573,131.85
  6. Step 6: Final answer
    x = 434,754.97

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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.