Home / 563,669.80-777,864.32-309,022.76

Finding the Fourth Proportional to 563,669.80, 777,864.32 and 309,022.76

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Solution

The fourth proportional to 563,669.80, 777,864.32 and 309,022.76 is: 426,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,669.80 : 777,864.32 = 309,022.76 : x
  2. Step 2: Convert to fraction form
    563,669.80/777,864.32 = 309,022.76/x
  3. Step 3: Cross multiply
    563,669.80x = 777,864.32 × 309,022.76
  4. Step 4: Simplify right side
    563,669.80x = 240,377,779,071.92
  5. Step 5: Solve for x
    x = 240,377,779,071.92/563,669.80
  6. Step 6: Final answer
    x = 426,451.41

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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.