Home / 563,146.07-777,131.15-308,495.43

Finding the Fourth Proportional to 563,146.07, 777,131.15 and 308,495.43

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Solution

The fourth proportional to 563,146.07, 777,131.15 and 308,495.43 is: 425,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,146.07 : 777,131.15 = 308,495.43 : x
  2. Step 2: Convert to fraction form
    563,146.07/777,131.15 = 308,495.43/x
  3. Step 3: Cross multiply
    563,146.07x = 777,131.15 × 308,495.43
  4. Step 4: Simplify right side
    563,146.07x = 239,741,406,743.17
  5. Step 5: Solve for x
    x = 239,741,406,743.17/563,146.07
  6. Step 6: Final answer
    x = 425,717.98

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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.