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Finding the Fourth Proportional to 563,437.80, 777,539.70 and 308,788.38

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Solution

The fourth proportional to 563,437.80, 777,539.70 and 308,788.38 is: 426,125.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,437.80 : 777,539.70 = 308,788.38 : x
  2. Step 2: Convert to fraction form
    563,437.80/777,539.70 = 308,788.38/x
  3. Step 3: Cross multiply
    563,437.80x = 777,539.70 × 308,788.38
  4. Step 4: Simplify right side
    563,437.80x = 240,095,224,348.69
  5. Step 5: Solve for x
    x = 240,095,224,348.69/563,437.80
  6. Step 6: Final answer
    x = 426,125.52

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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.