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Finding the Fourth Proportional to 771,346.80, 1,157,020.20 and 755,600.40

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Solution

The fourth proportional to 771,346.80, 1,157,020.20 and 755,600.40 is: 1,133,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,346.80 : 1,157,020.20 = 755,600.40 : x
  2. Step 2: Convert to fraction form
    771,346.80/1,157,020.20 = 755,600.40/x
  3. Step 3: Cross multiply
    771,346.80x = 1,157,020.20 × 755,600.40
  4. Step 4: Simplify right side
    771,346.80x = 874,244,925,928.08
  5. Step 5: Solve for x
    x = 874,244,925,928.08/771,346.80
  6. Step 6: Final answer
    x = 1,133,400.60

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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.