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Finding the Fourth Proportional to 611,510.90, 917,266.35 and 328,075.70

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Solution

The fourth proportional to 611,510.90, 917,266.35 and 328,075.70 is: 492,113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,510.90 : 917,266.35 = 328,075.70 : x
  2. Step 2: Convert to fraction form
    611,510.90/917,266.35 = 328,075.70/x
  3. Step 3: Cross multiply
    611,510.90x = 917,266.35 × 328,075.70
  4. Step 4: Simplify right side
    611,510.90x = 300,932,799,862.70
  5. Step 5: Solve for x
    x = 300,932,799,862.70/611,510.90
  6. Step 6: Final answer
    x = 492,113.55

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Similar ratio
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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.