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Finding the Fourth Proportional to 877,563, 1,211,036.94 and 475,155

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Solution

The fourth proportional to 877,563, 1,211,036.94 and 475,155 is: 655,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,563 : 1,211,036.94 = 475,155 : x
  2. Step 2: Convert to fraction form
    877,563/1,211,036.94 = 475,155/x
  3. Step 3: Cross multiply
    877,563x = 1,211,036.94 × 475,155
  4. Step 4: Simplify right side
    877,563x = 575,430,257,225.70
  5. Step 5: Solve for x
    x = 575,430,257,225.70/877,563
  6. Step 6: Final answer
    x = 655,713.90

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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.