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Finding the Fourth Proportional to 507,490.96, 700,326.80 and 278,037.08

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Solution

The fourth proportional to 507,490.96, 700,326.80 and 278,037.08 is: 383,685.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,490.96 : 700,326.80 = 278,037.08 : x
  2. Step 2: Convert to fraction form
    507,490.96/700,326.80 = 278,037.08/x
  3. Step 3: Cross multiply
    507,490.96x = 700,326.80 × 278,037.08
  4. Step 4: Simplify right side
    507,490.96x = 194,716,818,517.74
  5. Step 5: Solve for x
    x = 194,716,818,517.74/507,490.96
  6. Step 6: Final answer
    x = 383,685.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.