Home / 563,931.11-778,274.15-309,331.51

Finding the Fourth Proportional to 563,931.11, 778,274.15 and 309,331.51

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Solution

The fourth proportional to 563,931.11, 778,274.15 and 309,331.51 is: 426,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,931.11 : 778,274.15 = 309,331.51 : x
  2. Step 2: Convert to fraction form
    563,931.11/778,274.15 = 309,331.51/x
  3. Step 3: Cross multiply
    563,931.11x = 778,274.15 × 309,331.51
  4. Step 4: Simplify right side
    563,931.11x = 240,744,714,521.12
  5. Step 5: Solve for x
    x = 240,744,714,521.12/563,931.11
  6. Step 6: Final answer
    x = 426,904.47

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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.