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Finding the Fourth Proportional to 637,840.40, 956,875.80 and 263,901.20

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Solution

The fourth proportional to 637,840.40, 956,875.80 and 263,901.20 is: 395,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,840.40 : 956,875.80 = 263,901.20 : x
  2. Step 2: Convert to fraction form
    637,840.40/956,875.80 = 263,901.20/x
  3. Step 3: Cross multiply
    637,840.40x = 956,875.80 × 263,901.20
  4. Step 4: Simplify right side
    637,840.40x = 252,520,671,870.96
  5. Step 5: Solve for x
    x = 252,520,671,870.96/637,840.40
  6. Step 6: Final answer
    x = 395,899.46

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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.