Home / 563,977.98-778,301.76-309,328.56

Finding the Fourth Proportional to 563,977.98, 778,301.76 and 309,328.56

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Solution

The fourth proportional to 563,977.98, 778,301.76 and 309,328.56 is: 426,880.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,977.98 : 778,301.76 = 309,328.56 : x
  2. Step 2: Convert to fraction form
    563,977.98/778,301.76 = 309,328.56/x
  3. Step 3: Cross multiply
    563,977.98x = 778,301.76 × 309,328.56
  4. Step 4: Simplify right side
    563,977.98x = 240,750,962,666.27
  5. Step 5: Solve for x
    x = 240,750,962,666.27/563,977.98
  6. Step 6: Final answer
    x = 426,880.08

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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.