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Finding the Fourth Proportional to 612,643.83, 917,084.70 and 554,907.03

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Solution

The fourth proportional to 612,643.83, 917,084.70 and 554,907.03 is: 830,656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,643.83 : 917,084.70 = 554,907.03 : x
  2. Step 2: Convert to fraction form
    612,643.83/917,084.70 = 554,907.03/x
  3. Step 3: Cross multiply
    612,643.83x = 917,084.70 × 554,907.03
  4. Step 4: Simplify right side
    612,643.83x = 508,896,747,135.44
  5. Step 5: Solve for x
    x = 508,896,747,135.44/612,643.83
  6. Step 6: Final answer
    x = 830,656.77

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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.