Home / 811,839.48-1,217,734.02-385,681.98

Finding the Fourth Proportional to 811,839.48, 1,217,734.02 and 385,681.98

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Solution

The fourth proportional to 811,839.48, 1,217,734.02 and 385,681.98 is: 578,511.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,839.48 : 1,217,734.02 = 385,681.98 : x
  2. Step 2: Convert to fraction form
    811,839.48/1,217,734.02 = 385,681.98/x
  3. Step 3: Cross multiply
    811,839.48x = 1,217,734.02 × 385,681.98
  4. Step 4: Simplify right side
    811,839.48x = 469,658,067,946.96
  5. Step 5: Solve for x
    x = 469,658,067,946.96/811,839.48
  6. Step 6: Final answer
    x = 578,511.00

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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.