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Finding the Fourth Proportional to 388,927.60, 583,391.40 and 262,956.40

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Solution

The fourth proportional to 388,927.60, 583,391.40 and 262,956.40 is: 394,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,927.60 : 583,391.40 = 262,956.40 : x
  2. Step 2: Convert to fraction form
    388,927.60/583,391.40 = 262,956.40/x
  3. Step 3: Cross multiply
    388,927.60x = 583,391.40 × 262,956.40
  4. Step 4: Simplify right side
    388,927.60x = 153,406,502,334.96
  5. Step 5: Solve for x
    x = 153,406,502,334.96/388,927.60
  6. Step 6: Final answer
    x = 394,434.60

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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.