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Finding the Fourth Proportional to 607,321.20, 910,981.80 and 512,842.80

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Solution

The fourth proportional to 607,321.20, 910,981.80 and 512,842.80 is: 769,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,321.20 : 910,981.80 = 512,842.80 : x
  2. Step 2: Convert to fraction form
    607,321.20/910,981.80 = 512,842.80/x
  3. Step 3: Cross multiply
    607,321.20x = 910,981.80 × 512,842.80
  4. Step 4: Simplify right side
    607,321.20x = 467,190,457,061.04
  5. Step 5: Solve for x
    x = 467,190,457,061.04/607,321.20
  6. Step 6: Final answer
    x = 769,264.20

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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.