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Finding the Fourth Proportional to 718,125.86, 990,649.50 and 548,064.74

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Solution

The fourth proportional to 718,125.86, 990,649.50 and 548,064.74 is: 756,051.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,125.86 : 990,649.50 = 548,064.74 : x
  2. Step 2: Convert to fraction form
    718,125.86/990,649.50 = 548,064.74/x
  3. Step 3: Cross multiply
    718,125.86x = 990,649.50 × 548,064.74
  4. Step 4: Simplify right side
    718,125.86x = 542,940,060,648.63
  5. Step 5: Solve for x
    x = 542,940,060,648.63/718,125.86
  6. Step 6: Final answer
    x = 756,051.40

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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.