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Finding the Fourth Proportional to 573,079.68, 790,834.30 and 318,424.32

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Solution

The fourth proportional to 573,079.68, 790,834.30 and 318,424.32 is: 439,416.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,079.68 : 790,834.30 = 318,424.32 : x
  2. Step 2: Convert to fraction form
    573,079.68/790,834.30 = 318,424.32/x
  3. Step 3: Cross multiply
    573,079.68x = 790,834.30 × 318,424.32
  4. Step 4: Simplify right side
    573,079.68x = 251,820,874,210.18
  5. Step 5: Solve for x
    x = 251,820,874,210.18/573,079.68
  6. Step 6: Final answer
    x = 439,416.86

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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.