Home / 1,308,490.84-1,961,573.02-509,587.80

Finding the Fourth Proportional to 1,308,490.84, 1,961,573.02 and 509,587.80

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Solution

The fourth proportional to 1,308,490.84, 1,961,573.02 and 509,587.80 is: 763,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,490.84 : 1,961,573.02 = 509,587.80 : x
  2. Step 2: Convert to fraction form
    1,308,490.84/1,961,573.02 = 509,587.80/x
  3. Step 3: Cross multiply
    1,308,490.84x = 1,961,573.02 × 509,587.80
  4. Step 4: Simplify right side
    1,308,490.84x = 999,593,679,801.16
  5. Step 5: Solve for x
    x = 999,593,679,801.16/1,308,490.84
  6. Step 6: Final answer
    x = 763,928.68

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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.