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Finding the Fourth Proportional to 1,571,369, 2,357,053.50 and 389,417

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Solution

The fourth proportional to 1,571,369, 2,357,053.50 and 389,417 is: 584,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571,369 : 2,357,053.50 = 389,417 : x
  2. Step 2: Convert to fraction form
    1,571,369/2,357,053.50 = 389,417/x
  3. Step 3: Cross multiply
    1,571,369x = 2,357,053.50 × 389,417
  4. Step 4: Simplify right side
    1,571,369x = 917,876,702,809.50
  5. Step 5: Solve for x
    x = 917,876,702,809.50/1,571,369
  6. Step 6: Final answer
    x = 584,125.50

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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.