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Finding the Fourth Proportional to 554,417.20, 831,625.80 and 288,696.70

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Solution

The fourth proportional to 554,417.20, 831,625.80 and 288,696.70 is: 433,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,417.20 : 831,625.80 = 288,696.70 : x
  2. Step 2: Convert to fraction form
    554,417.20/831,625.80 = 288,696.70/x
  3. Step 3: Cross multiply
    554,417.20x = 831,625.80 × 288,696.70
  4. Step 4: Simplify right side
    554,417.20x = 240,087,624,094.86
  5. Step 5: Solve for x
    x = 240,087,624,094.86/554,417.20
  6. Step 6: Final answer
    x = 433,045.05

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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.