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Finding the Fourth Proportional to 876,657.58, 1,209,372.12 and 570,622.32

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Solution

The fourth proportional to 876,657.58, 1,209,372.12 and 570,622.32 is: 787,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,657.58 : 1,209,372.12 = 570,622.32 : x
  2. Step 2: Convert to fraction form
    876,657.58/1,209,372.12 = 570,622.32/x
  3. Step 3: Cross multiply
    876,657.58x = 1,209,372.12 × 570,622.32
  4. Step 4: Simplify right side
    876,657.58x = 690,094,724,857.72
  5. Step 5: Solve for x
    x = 690,094,724,857.72/876,657.58
  6. Step 6: Final answer
    x = 787,188.45

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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.