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Finding the Fourth Proportional to 890,136, 1,335,371.40 and 357,699.24

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Solution

The fourth proportional to 890,136, 1,335,371.40 and 357,699.24 is: 536,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,136 : 1,335,371.40 = 357,699.24 : x
  2. Step 2: Convert to fraction form
    890,136/1,335,371.40 = 357,699.24/x
  3. Step 3: Cross multiply
    890,136x = 1,335,371.40 × 357,699.24
  4. Step 4: Simplify right side
    890,136x = 477,661,334,897.74
  5. Step 5: Solve for x
    x = 477,661,334,897.74/890,136
  6. Step 6: Final answer
    x = 536,616.13

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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.