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Finding the Fourth Proportional to 1,040,148, 1,435,412.88 and 563,220

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Solution

The fourth proportional to 1,040,148, 1,435,412.88 and 563,220 is: 777,248.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,148 : 1,435,412.88 = 563,220 : x
  2. Step 2: Convert to fraction form
    1,040,148/1,435,412.88 = 563,220/x
  3. Step 3: Cross multiply
    1,040,148x = 1,435,412.88 × 563,220
  4. Step 4: Simplify right side
    1,040,148x = 808,453,242,273.60
  5. Step 5: Solve for x
    x = 808,453,242,273.60/1,040,148
  6. Step 6: Final answer
    x = 777,248.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.