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Finding the Fourth Proportional to 553,434.57, 830,152.08 and 427,259.07

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Solution

The fourth proportional to 553,434.57, 830,152.08 and 427,259.07 is: 640,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,434.57 : 830,152.08 = 427,259.07 : x
  2. Step 2: Convert to fraction form
    553,434.57/830,152.08 = 427,259.07/x
  3. Step 3: Cross multiply
    553,434.57x = 830,152.08 × 427,259.07
  4. Step 4: Simplify right side
    553,434.57x = 354,690,005,659.37
  5. Step 5: Solve for x
    x = 354,690,005,659.37/553,434.57
  6. Step 6: Final answer
    x = 640,888.78

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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.