Home / 426,938.77-639,079.55-268,835.07

Finding the Fourth Proportional to 426,938.77, 639,079.55 and 268,835.07

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Solution

The fourth proportional to 426,938.77, 639,079.55 and 268,835.07 is: 402,416.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,938.77 : 639,079.55 = 268,835.07 : x
  2. Step 2: Convert to fraction form
    426,938.77/639,079.55 = 268,835.07/x
  3. Step 3: Cross multiply
    426,938.77x = 639,079.55 × 268,835.07
  4. Step 4: Simplify right side
    426,938.77x = 171,806,997,829.61
  5. Step 5: Solve for x
    x = 171,806,997,829.61/426,938.77
  6. Step 6: Final answer
    x = 402,416.01

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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.