Home / 674,739.60-930,987.18-402,895.50

Finding the Fourth Proportional to 674,739.60, 930,987.18 and 402,895.50

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Solution

The fourth proportional to 674,739.60, 930,987.18 and 402,895.50 is: 555,904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,739.60 : 930,987.18 = 402,895.50 : x
  2. Step 2: Convert to fraction form
    674,739.60/930,987.18 = 402,895.50/x
  3. Step 3: Cross multiply
    674,739.60x = 930,987.18 × 402,895.50
  4. Step 4: Simplify right side
    674,739.60x = 375,090,545,379.69
  5. Step 5: Solve for x
    x = 375,090,545,379.69/674,739.60
  6. Step 6: Final answer
    x = 555,904.15

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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.