Home / 563,829.13-778,119.63-309,180.31

Finding the Fourth Proportional to 563,829.13, 778,119.63 and 309,180.31

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Solution

The fourth proportional to 563,829.13, 778,119.63 and 309,180.31 is: 426,688.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,829.13 : 778,119.63 = 309,180.31 : x
  2. Step 2: Convert to fraction form
    563,829.13/778,119.63 = 309,180.31/x
  3. Step 3: Cross multiply
    563,829.13x = 778,119.63 × 309,180.31
  4. Step 4: Simplify right side
    563,829.13x = 240,579,268,420.49
  5. Step 5: Solve for x
    x = 240,579,268,420.49/563,829.13
  6. Step 6: Final answer
    x = 426,688.26

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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.