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Finding the Fourth Proportional to 532,420.40, 798,790.68 and 319,422.80

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Solution

The fourth proportional to 532,420.40, 798,790.68 and 319,422.80 is: 479,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,420.40 : 798,790.68 = 319,422.80 : x
  2. Step 2: Convert to fraction form
    532,420.40/798,790.68 = 319,422.80/x
  3. Step 3: Cross multiply
    532,420.40x = 798,790.68 × 319,422.80
  4. Step 4: Simplify right side
    532,420.40x = 255,151,955,619.50
  5. Step 5: Solve for x
    x = 255,151,955,619.50/532,420.40
  6. Step 6: Final answer
    x = 479,230.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.