Home / 554,479.90-831,719.85-402,920.80

Finding the Fourth Proportional to 554,479.90, 831,719.85 and 402,920.80

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Solution

The fourth proportional to 554,479.90, 831,719.85 and 402,920.80 is: 604,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,479.90 : 831,719.85 = 402,920.80 : x
  2. Step 2: Convert to fraction form
    554,479.90/831,719.85 = 402,920.80/x
  3. Step 3: Cross multiply
    554,479.90x = 831,719.85 × 402,920.80
  4. Step 4: Simplify right side
    554,479.90x = 335,117,227,337.88
  5. Step 5: Solve for x
    x = 335,117,227,337.88/554,479.90
  6. Step 6: Final answer
    x = 604,381.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.