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Finding the Fourth Proportional to 688,420, 949,753.38 and 507,561.04

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Solution

The fourth proportional to 688,420, 949,753.38 and 507,561.04 is: 700,237.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,420 : 949,753.38 = 507,561.04 : x
  2. Step 2: Convert to fraction form
    688,420/949,753.38 = 507,561.04/x
  3. Step 3: Cross multiply
    688,420x = 949,753.38 × 507,561.04
  4. Step 4: Simplify right side
    688,420x = 482,057,813,296.32
  5. Step 5: Solve for x
    x = 482,057,813,296.32/688,420
  6. Step 6: Final answer
    x = 700,237.96

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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.